here's my favorites...
http://www.youtube.com/watch?v=Qe_mS_ucYCM
that thing is frickin sick!!! now just need to have the driver sit lower, and widen the wheels so it can corner...

http://www.youtube.com/watch?v=w6qo6dXONww
one badarse VX!!!!

http://www.youtube.com/watch?v=RoGHqYzAhcA
this one cracks me up...my friend made this..