Add car keys so anyone with the keys can open/close the car and turn on/off the engine
Learn some complicated maths and add vehicles colissions (car to car collision)
Add an option to add vehicles break like for example: cars health 85-100 the car has normal model, 60-84 the car model is a little broke, 30-59 car is medium broke, etc. just add that for ecample i can make each car 5 models, that will represent car health and the models will change while we gain or loose health
Remove that the car blows up when health is equal 0, make it just stop and add an option for vp.mechanic guys to fix stopped cars
Make exactly the same gui tuning that was in vpro1
Add police/medic sirens option to add to a car
Add fuel pumps like in vpro1
Make brakes stop the car a little bit faster
Make wheels rotate (simply rotate armor stand with wheel like you know)
Add car radio so while in car, if engine is on and u click on the radio (u can change X Y Z in config) you open gui with every minecraft music on CD and you can play one of them so everyone in the car hears it.
Add seatbelts and crash effect so basicly on crash with wall/another car we get damage and our screen gets black out for some time but if we got seatbelts the crash effect is much much "easier" u know and also while being seatbelted u can't get out from the car.