I spoke for some time with someone who works at the corporate level with Alta Motors, here in the Bay Area. The whole project sounds very promising. He explained quite a bit, including the reason why they did not go with hub motors. Apparently they present some pretty severe overheat problems in higher power ranges, at least with the technology they have now. Alta uses a water cooled system, and the housing of the motor is the core of the bike. Still, this guy bought my 85 Honda Elite 150. Old school technology still works for basic transportation, I guess.