Really fun demo. I'd say that the brakes are too weak. It feels like I am trying to stop a truck. What makes it even worse is that the car accelerates quickly and is fast. The rear swings out too much in my opinion but if it's inspired by Sega Rally then I guess it's perfect. Also the demo area was completely flat. It'd be interesting to see how it behaves on an uneven surface. 

The track is flat due is the best way to check if the car physiscs works, and nothing related to the ground does nothing that make the car jump/stuck for no reason. Btw there are some nice green ramps to check the air controls and do some 360 or back flips.

You're right about the brakes are sometimes too weak, is something i need to work.

New version, brakes work much better. I think still needs a bit more but now it not should be annoying.