For the tire skeptics, they added weights to the inside of the rims, on the upper portion. Large weights infact, and when triggered, gravity pulling them down causes tire to roll almost impossibly upwards. Just counterweight action. I wondered about that until I read an explantion on the directors (I think) website.
Bill- That's why the tire bounces back (against the pull of the counterweight, storing up a little more energy) then rolls back uphill.
[This message has been edited by rat4spd (edited 06-19-2003).]
