Kongregate's terms of service say that you have to be 13 to have an account... So putting a game for younger children on here seems kind of silly.. >.>
It's pretty good. I found the best way to keep going for a while is to keep the mouse at the top of the window so that you have more time to get out of the way of everything.. It'd be nice if even though high scores aren't posted here, it told you your score at the end. (I wasn't watching that at all because I was paying attention to not crashing.)
It seems like in the first race all of the cars are faster than yours, and in addition you start in the back..nearly impossible to win. =\ Also, I had the same bug with not being able to click menu/play or anything on the first load, but it worked when I refreshed.