How about having the ability to modify and customise vehicles you own?
This could be involve getting new parts that can influence -
better stability and less skidding,
better speed or short speed ‘boosts’
greater vehicle durability – cars can take more punishment,
better off-road capability (driving through rocky terrain)
Plus of course different looks and colours and more superficial appearance things.
Perhaps you could even make your own vehicle from a ruined shell of a car that you discover somewhere?
This could all be done in new GARAGES in game that you need to find and work something out with the owners. If you are a NOMAD perhaps you can get special additions and mods for your vehicles that the other classes can’t?