Oh man. Those definitely look like treads to me. Reminds me of a match in Atlanta 2 years ago where 4 out of 6 robots flipped during a match.
Basically, it goes something like this:
401's robots have had flat outer edges for the last few years now. Basically, we build a box frame, and then put lexan on the outside of this box. We were being defended by a robot whose really tacky treads stuck out past their frame. Long story short, they drove up against us, and then the treads started going UP the sides of our robot, causing them to flip over.
Granted, it wasn't nearly as exciting as 48. You guys almost got some hang-time, which we honestly don't have enough of in FIRST

.
I've got it! We've all designed drivetrains, arms, conveyor belts, and even shooters! Next year, FIRST is going to make us design suspension systems to use with the next generation of ramp-bots.
