thanks for all the helpful replies, that dude in the video above isn't actually riding one of the new rear track wheels, its an older road aerospoke that he tinkered with and made it into a track. anyway, i guess i'm more interested in how they skid and if the weight really affects it. i've ridden aerospokes in several of my bikes, including road, and love them. while quite a bit heavier than most wheels, and sometimes even wheelSETS, they literally take everything you can throw at them. case in point: one of my buddies had an accident where his bike got pulled under a BUS. frame was fuc*ed, aerospoke survived with hardly a scratch to the body. homie just replaced the hub and it was back on the road. yeah, you can't true them, but you probably won't ever have to. finally, aerospoke has a dope warranty policy wherein you can exchange a beaten up aerospoke for a brand new one for 150 bones.
again, thanks for the help everyone- keep those rear reviews coming