is there a mod to manage witch cars are use. as i only want these cars in my city

Repair the car please all "fifth element". After the upgrade, they stopped working.
Sorry for my English

all we need is a way to limit the type of vehichles we have on the roads to just have flying cars and trucks in the city, then for someone to make a mod of invisible road types that way you could have actual flying cars and just have invisible roads across the sky