Okay so we've finished work on the vehicle physics...
The vehicles are more stable to the ground to start with, that means when it hits a wall it doesn't bounce in the same way.
Secondly, the sounds are way more realistic. They actually make you feel like you've crashed the car.
A vehicle is now damaged on contact with a person or object, depending on the speed it was going.
These updates are obviously a long way for the vehicle physics to be perfect, but we are trying!
And before you complain that "these are no improved vehicle physics!!1!", They are physical elements which have been improved, and they are an improvement.