GarageGeeks have a ton of amazing projects: Guitar Heronoid (we covered this one previously), Mototank, CPod, Real Pac-Man, O-Re-Ly, Geek-o-meter and many many more… Pictured here, MotoTank!
Take two motorcyles, cut them in two and connect them to a wheel. What do you get?? A tank! Each (half) motorcyle is completely independant with its own electrical and fueling system, while the streeting is common.
GarageGeeks – Link.