You can edit some of the games numbers.
Get the GSFileviewer (Link
Open your games folder and make a backup of objects.gs
Open the objects.gs
file in your game folder. In there you will find a folder called vehicles
. There is a subfolder for every kind of vehicle, like bus-01
etc., you can use windows editor for that. In there you can edit price, reliabilty, fuel/electricity consumption, attractiveness and speed. Close and save, repeat for the other vehicles. Save the result as a new GS.
You can't replace the original objects.gs while saving, so save it to another folder and then move it into the game folder afterwards.
Saving may take a while, and the GSFileviewer may go unresponsive. Just wait.
That's what I did. Works fine.
Sorry for bad english 😵