Few things:
1 -- > Music is really sucks for such game...
2 -- > Will you make car bounce of the obstacle if it was hit? Cause only reducing speed doesn't look good.
3 -- > Camera (the 2 one) is still sucks... but if you move it downwards a bit will be better...
4 -- > Backwards movement bug (example: when I turn to left and move backward car must turn to the left same if I turn to the right).
5 -- > Why when I move backwards speedometer's arrow move under zero?!

6 -- > One tip about camera, why don't you make ability to move camera closer and farther for fixed steps (as in many rally games)?
7 -- > I think if you add more drift (when turning with high speed) it will make game more dynamic.
In all other ways, looks good.
Get inspired:
Half Life Rally Mod