Body Modifications (examples: body kits which can make the vehicle look better)
Additional customization: graffiti or some cool art which can be used for like the in game supra to create the iconic Paul walker car.
Nighttime: Streetlights turn on and there will be a day/night cycle. You can also turn on car lights anytime you want. In the streets, you can drift with style and possible crash 
Idk if this is in the game or not but under glow to be added. More specifically a feature that can be installed for cars.
