It seems nice, but for whatever reason I started to lag a little. You could also probably increase the movement speed a little, I felt like a snail trying to accelerate.
Other than that, and that some sound effects would bring the game to life, it's a fun idea! Have a car, shoot down baddies, deliver to various towns cargo that you find / get from other locations, you could expand this quite a lot, and even make a full release some time!

It's interesting how it's easier to turn going in reverse. The car handling was a bit slow at times, and the camera being connected to the rotation of the car seemed a bit nauseating at times. Overall, it works, but could use more time :)

I feel like I missed the point of the game

Nice! The shadows were a little too harsh, making it hard to see parts of the path. Still, very nice work.