Amazing concept that goes really really well with the theme! He does drive quite slow though and that mixed with the speed loss he gets from being hit with a item really make the game kinda frustrating. I'd recommend bringing up the speed and make him not slow down as much when you hit him. Also it is not intuitive AT ALL that you're supposed to pick up the barrels and boxes, I had to come to the comment section to find that out. I would recommend making it more obvious. I am a huge fan of no tutorials and no text telling you what to hit so the way I would think best to do it is have the game start with with a bunch of barrels or boxes in front of car keeping him from moving. That way the player is very likely to try to move them with the mouse. I did try moving the road blocks with my mouse before I ever came to the comments to find out I was supposed to move the barrels. Altogether though I do quite like it and you did a really good job working with the theme!