Mini racers

this is a racing game that i made, took about 15 hours of work, tell me what you think. is it too hard? some people seemed to have trouble with it. ill be adding more tracks i think.
to open all the tracks type in: trackmaster

EDIT: forgot the link :x

http://img116.imageshack.us/my.php?image=cargamedi8.swf

EDIT:
Larger resolution:
http://img116.imageshack.us/my.php?image=cargamedi8.swf&width=800