At 68 lbs for 75 kW, this would already seem to be a practical proposition for larger 4wd PHEVs (ICEV front wheel drive, electric rear?) and 2wd and 4wd BEV trucks/SUVs where the unsprung weight penalty of IWMs is not as significant as it is for smaller vehicles.
Protean Electric will introduce its production in-wheel motor at the 2013 Society of Automotive Engineers World Congress in Detroit.
Protean’s new production motor provides a 25% increase in peak torque compared with the previous generation’s design and can deliver 1,000 N·m (735 lb-ft) and 75 kW (100 hp), not quite keeping pace with the new industry benchmark.
Other features of Protean’s in-wheel motors include:
•Mass of only 31 kg (68 lbs) per motor.
•Up to 85% of the available kinetic energy to be recovered during braking...
http://www.electric-vehiclenews.com/201 ... wheel.html