April 2026 Update
Another update is available! You can download it here.
Please note that while prior releases ran on Java 8, this one runs on Java 17 through 26. This brings the Secretary in line with the times, but means that you may need to upgrade to a more recent Liberica Java release, being sure to select a "Full" version of either the JDK or JRE. The "Standard" and "Lite" versions do not include the nice graphics necessary to show all the charts.
Here are the changes:
World Fleet Report
As teased on Pi Day 2024, there is a new World Fleet Report.
![[Image: attachment.php?aid=1768]](https://www.ventdev.com/forums/attachment.php?aid=1768)
This report shows the cumulative emissions across the world fleet over the prior calendar year; this save is from 1971, so it's showing 1970 emissions.
New Sales is what it sounds like - the number of new cars sold in a given year.
Annual Survival is based on the average dependability of models in that year, and is expected to gradually increase over time (although in this 2.3.x save, it eventually plateaued).
Amount on Road is how many cars from that year are still out there driving around. This is calculated per-model based on the model's dependability and age; more dependable vehicles spend longer on the road.
% Fleet is the percentage of the surviving fleet which comes from that model year. For the "Total" column, it shows the percentage of all cars ever sold which remain on the road.
Fuel Economy shows the year's annual fuel economy.
Fuel Burned shows how much fuel models from that year burned (as well as the total). This is based on the amount still on the road, the fuel economy of those models, and a fixed average mileage per year (currently 9500); eventually this mileage-per-year will vary by year (and perhaps type of vehicle).
You can configure the units for Fuel Burned with the Preferences menu, to either U.S. Gallons, Imperial Gallons, or Barrels, to match your local unit preferences. Reload the save or wait for the next auto-save to see the updated units. Note that the dynamic units so far only applied to the Fuel Burned column; it is not yet possible to see fuel economy in miles-per-barrel, for example.
"Barrels" is defined in terms of the oil barrel, which is exactly 42 U.S. Gallons.
CO2 (g/mi) shows the grams of CO2 (carbon dioxide) emitted per mile traveled for a given year's remaining vehicles on the road. These are calculated based on the vehicle's fuel efficiency as well as the amount of CO2 released by burning a gallon of the vehicle's type of fuel.
In order of most CO2 per gallon to least, the fuels are diesel (10.21 kilograms CO2 per gallon), "water" (kerosene, for steam cars, 10.15 KG CO2/gallon), gasoline (8.78 KG CO2/gallon), natural gas (6.727 KG CO2 per gallon), E85 (6.20 KG CO2 per gallon), autogas/LPG (5.68 KG CO2/gallon), and hydogen/electricity (0 KG CO2/gallon); these values are calculated from this EPA document.
How can burning a U.S. gallon of fuel that weighs about 2.7 kilograms release far more than that in CO2 content? The answer is that while the carbon comes from the fuel, it binds with oxygen in the air, which provides the majority of the weight in the resultant CO2.
CH4/N2O (g CO2e/mi) shows the grams of CO2-equivalent (global warming potential) released per mile traveled, of CH4 (methane) and N2O (nitrous oxide). These are calculated based on the vehicles' emission values as well as fuel burned. Methane is 25 times as powerful at warming up the environment as CO2, and nitrous oxide is 298 times as powerful, but the amounts released are generally significantly smaller.
A vehicle with a Gear City emissions rating of 10,000 CVES will release 1.8758 grams of methane, and 0.6388 grams of nitrous oxide per U.S. gallon burned. These are based on comparisons between historical figures of CH4 and NO2 emissions from the EPA, and Gear City CVES values for the United States, with 1979 figures used as a representative comparison point.
As can be seen, CH4/N2O emissions tend to be reduced more quickly than carbon emissions.
Total CO2 Emissions shows the amount of CO2 released by vehicles from a certain model year burning fuel on the road. This is only the tailpipe emissions, and does not include any manufacturing-related emissions. This is measured in metric tons, including kilotons and megatons for larger figures.
The total column shows the total amount of emissions from all cars in the prior in-game year; in this case, 193 megatons of emissions were made in 1970 alone.
Total GHG Emissions (CO2e) shows the total amount of greenhouse gas emissions, inclusive of CO2, CH4, and N2O.
You can see a list of countries by greenhouse gas emissions here, if you would like to have some comparison points for how much fuel your fleet is burning. The figure in the screenshot is close to the real-world 2023 emissions of Pakistan and the United Arab Emirates (although those are whole-country emissions, not solely auto fleet emissions).
Java 17 to 26 Compatibility
This is a big one - the Executive Secretary now runs on Java 17 through 26 (and likely 27, etc. as they will be released).
You can download the Java 25, the latest long-term-support release, here. Make sure to download the Full JDK or Full JRE versions from the drop-down. The default Standard JDK release is not compatible because it does not include the fancy graphics that the Secretary makes heavy use of.
Geographic Comparison Fix
In the prior release, country names were missing from the Geographic Comparison report in 2nd Gear, being replaced by numbers (e.g. "1" instead of "Canada"). This has been fixed.
Another update is available! You can download it here.
Please note that while prior releases ran on Java 8, this one runs on Java 17 through 26. This brings the Secretary in line with the times, but means that you may need to upgrade to a more recent Liberica Java release, being sure to select a "Full" version of either the JDK or JRE. The "Standard" and "Lite" versions do not include the nice graphics necessary to show all the charts.
Here are the changes:
World Fleet Report
As teased on Pi Day 2024, there is a new World Fleet Report.
This report shows the cumulative emissions across the world fleet over the prior calendar year; this save is from 1971, so it's showing 1970 emissions.
New Sales is what it sounds like - the number of new cars sold in a given year.
Annual Survival is based on the average dependability of models in that year, and is expected to gradually increase over time (although in this 2.3.x save, it eventually plateaued).
Amount on Road is how many cars from that year are still out there driving around. This is calculated per-model based on the model's dependability and age; more dependable vehicles spend longer on the road.
% Fleet is the percentage of the surviving fleet which comes from that model year. For the "Total" column, it shows the percentage of all cars ever sold which remain on the road.
Fuel Economy shows the year's annual fuel economy.
Fuel Burned shows how much fuel models from that year burned (as well as the total). This is based on the amount still on the road, the fuel economy of those models, and a fixed average mileage per year (currently 9500); eventually this mileage-per-year will vary by year (and perhaps type of vehicle).
You can configure the units for Fuel Burned with the Preferences menu, to either U.S. Gallons, Imperial Gallons, or Barrels, to match your local unit preferences. Reload the save or wait for the next auto-save to see the updated units. Note that the dynamic units so far only applied to the Fuel Burned column; it is not yet possible to see fuel economy in miles-per-barrel, for example.
"Barrels" is defined in terms of the oil barrel, which is exactly 42 U.S. Gallons.
CO2 (g/mi) shows the grams of CO2 (carbon dioxide) emitted per mile traveled for a given year's remaining vehicles on the road. These are calculated based on the vehicle's fuel efficiency as well as the amount of CO2 released by burning a gallon of the vehicle's type of fuel.
In order of most CO2 per gallon to least, the fuels are diesel (10.21 kilograms CO2 per gallon), "water" (kerosene, for steam cars, 10.15 KG CO2/gallon), gasoline (8.78 KG CO2/gallon), natural gas (6.727 KG CO2 per gallon), E85 (6.20 KG CO2 per gallon), autogas/LPG (5.68 KG CO2/gallon), and hydogen/electricity (0 KG CO2/gallon); these values are calculated from this EPA document.
How can burning a U.S. gallon of fuel that weighs about 2.7 kilograms release far more than that in CO2 content? The answer is that while the carbon comes from the fuel, it binds with oxygen in the air, which provides the majority of the weight in the resultant CO2.
CH4/N2O (g CO2e/mi) shows the grams of CO2-equivalent (global warming potential) released per mile traveled, of CH4 (methane) and N2O (nitrous oxide). These are calculated based on the vehicles' emission values as well as fuel burned. Methane is 25 times as powerful at warming up the environment as CO2, and nitrous oxide is 298 times as powerful, but the amounts released are generally significantly smaller.
A vehicle with a Gear City emissions rating of 10,000 CVES will release 1.8758 grams of methane, and 0.6388 grams of nitrous oxide per U.S. gallon burned. These are based on comparisons between historical figures of CH4 and NO2 emissions from the EPA, and Gear City CVES values for the United States, with 1979 figures used as a representative comparison point.
As can be seen, CH4/N2O emissions tend to be reduced more quickly than carbon emissions.
Total CO2 Emissions shows the amount of CO2 released by vehicles from a certain model year burning fuel on the road. This is only the tailpipe emissions, and does not include any manufacturing-related emissions. This is measured in metric tons, including kilotons and megatons for larger figures.
The total column shows the total amount of emissions from all cars in the prior in-game year; in this case, 193 megatons of emissions were made in 1970 alone.
Total GHG Emissions (CO2e) shows the total amount of greenhouse gas emissions, inclusive of CO2, CH4, and N2O.
You can see a list of countries by greenhouse gas emissions here, if you would like to have some comparison points for how much fuel your fleet is burning. The figure in the screenshot is close to the real-world 2023 emissions of Pakistan and the United Arab Emirates (although those are whole-country emissions, not solely auto fleet emissions).
Java 17 to 26 Compatibility
This is a big one - the Executive Secretary now runs on Java 17 through 26 (and likely 27, etc. as they will be released).
You can download the Java 25, the latest long-term-support release, here. Make sure to download the Full JDK or Full JRE versions from the drop-down. The default Standard JDK release is not compatible because it does not include the fancy graphics that the Secretary makes heavy use of.
Geographic Comparison Fix
In the prior release, country names were missing from the Geographic Comparison report in 2nd Gear, being replaced by numbers (e.g. "1" instead of "Canada"). This has been fixed.