This game probably had the best execution of all games I played for the jam. Really nice graphics and level design.
I loved the idea of first 2 signs serving as the game's tutorial. Very clever.
With that said, the design of the game didn't really grab me as it is now - there is really not a lot of gameplay besides braking from time to time. I would look into adding more mechanics to make the gameplay more intriguing. I see that you guys had planned quite a few things, but didn't have time to include them (which is understandable, considering its only a 48h jam) - however we are to judge games primarily based on the idea/design. That's why I would have preferred if I could see the idea more fleshed out, even at the expense of the execution/graphics.
Best of luck, you guys deserve it!