pretty fun!! your car physics are GREAT, even without everything else it's really fun to just drive around. Even accidentally flipping myself over or crashing was fun xD... seems like i'm not a great driver.
I love the way you made changing the radio work. Having to press tab and take your eyes off the road really helps with the hectic feeling. Especially when stuff gets thrown at you later into the game, it adds a lot of challenge in a fun way. Normally I'd say I prefer for the radio channels to use keyboard controls, but actually, making the control scheme harder just made it more interesting to play.
The only criticism I have it's a bit confusing in the beginning of the game what the goal is, but I got the hang of it pretty quick. I also didn't realize I could flip back over on my first run.