Automation is a car company tycoon game where you can build and design your own cars and it has gotten really good as of late. Maybe there could be a contest and the players who win this contest can have some of their cars in Forza Horizon.
For EV’s and Hybrids, players get really creative so while the game is designed to make cars that are ICE powered, they can tell the game to hide the engine and delete the engine sound file and tweaking one file can remove the emissions before the car gets put into BeamNG.Drive.