Wow. Now this is interesting. I really loved your art style. Its unique and remind me of a painter called: Emily Carr. I don't know why though.
Back to the game. My biggest complaint is that the player/car is SUPER slow. I would suggest that if you have a big map/world, you would want the player to be able to move a bit faster. Another small issue is that I had no idea what to do after climbing into the car. I went up to the floating blocks in the sky and got stuck.
But ignoring all of that. Your game was a perfect example of how to stand out from the ordinary. While there are things you could improve. Your game has a lot of creative elements that I adore.