I didn't touch their robot this year, but I know this much:
1) 80/20 elevator. In essence, it's Ockham (their
2005 machine) with tracks and a different gripper. (Actually, I think they robbed some of Ockham's 80/20 and re-cut it for Atlas.) It was driven by a pair of window motors. I don't have any pictures of it, but perhaps someone on the team can bail me out here.
2) The base, far as I could tell, is flat on the bottom. They ended up grinding down every other link's tread at Palmetto, and I didn't see any turning issues in our two matches together.