That's a very good idea! Here is my feedback:
- I really like the art but between the player, the car, the different levels, it does not look consistent.
- The controls are a bit clunky. I love the fact that the player is faster and faster as the levels go but the jump seem weird.
- Collisions are strange, when you crouch and with the birds. You could keep the birds collision as it is but then, implement some sort of health bar or little hearts that you lose.
- I think having to rewind the entire level is a bit punishing (especially given the problems above), that would be nice if you could rewind to a checkpoint (but the levels seem short) or rewind back a few seconds.
Overall, I think it's a nice, relaxing, take on the theme and I love what you did with it! Keep up the good work!