We will implement explosions and destructible objects in opur game after the jam. Crashing in the boxes felt very satisfying.
I personally did not like the mouse controls, although it was an interesting experience, never drove a car this way till now. But thats more personal preference than criticism ;)
What I missed was drift sounds. I think sounds for drifting would have made the game even more enjoyable to play. But nonetheless a fun little jam game I really enjoyed :)