I don't know how this works

[denare]

http://www.dump.com/2011/07/30/under-the-ruler-faster-than-the-ruler-video/

I have no idea how that is done, but it's interesting.

Comments

[yakitate8888]

I'll bet if you posted it on reddit you'd get an answer. xD

[wingywoof]

STAND BACK I'M GOING TO TRY SCIENCE

[denare]

I think the part I can't wrap my head around is that when you move just the wheels to the left, the cart moves the opposite way.
Yet when a ruler does that, the cart follows the ruler at double speed.
Must be some sort of law at work I don't know about.