Hub motors are great on bicycles, but not so much on cars like in the pic. I've been a SAE member for a decade, and their newsletters with hub motors always gave me a kick, and I noticed they don't promote the technology much now for automotive use, just for slow moving construction equipment where unsprung mass won't create traction, ride, and handling problems. They figured out that the transmission losses from a couple of halfshafts from a centrally located electric motor was negligible, and far outweighs trying to synch up the power transmission and wear of individual hub motors, originally they thought it would make a novel way for AWD until the realities of it all set in and the experienced engineers blew the time-out whistle and let them know they were reinventing the wheel, a square one! lol