Hello, i found this game very nice. I think some changes will make this game even better.
I get hit a lot on plant and rock, if you increase array size that will make game more pleasant.
When a level is finished, show panel with start and add 'retry' button will be nice.
Show objectifs to have 3 starts in play mode on top side will give player more fun to play.
Last but not least speed up while car is moving.