So I was thinking maybe there could be more realistic-ish vehicles?
Bikes-
If you slow down while riding or stop the bike falls and you tumble off of it.
If you get too high where you took off you tumble off your bike.
Cars-
These cars could have getting in/out animations? Opening the doors, turning the car on?
They also don't turn that fast, they could have poorer handling than the default jeep in Blockland.
Gas, maybe? (OPTIONAL)
Vehicles could use repairs after being used too much.