[Jeff K.]

Nice.
We also have to make a mousetrap car for the physics olympics. My friend and I are doing a collaboration and we're making that, a joule car, the toothpick bridge, and a rube goldberg. I might also do the paper tower and the slow bicycle race.

We're also using pulleys to get the maximum distance out of it, since the competition is for distance.

Do you have to go for maximum speed, and what materials have you considered for the axles?