Internal combustion vehicles available in the game are making excessive noise. As much as it is fun to drive, it attracts the attention of zombies.
I think the game takes place in the 90s and there were electric vehicles on the market at that time. If these vehicles are added to the game, traveling between provinces or districts with less sound would be a little better. I did some research and in the 90s there were EV1 cars made by General Motors. Generators or solar cells can be used to charge them.
Electric vehicles weren't very common back then, and if you add them to the game, you'll still do the same. This will not make the game any easier.
