It sounds like you ran out of time before you got to finish everything you wanted, but you still got to submit something, and that's great! I liked the theme of driving around and running over things... it's very satisfying. I wasn't sure what I was supposed to do to not get hurt in the process, though. And it seems like driving left and right was way slower than going up and down. But I do like the core idea you have though; I hope you decide to flesh it out and continue it someday.