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Protean Electric claims its in-wheel motors, when installed in a diesel Vauxhall Vivaro, boosted the van's fuel economy by some 300 percent (!) in European drive-cycle tests.

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Have you ever thought that putting motors inside the wheels of a vehicle may a more elegant way of providing propulsion? It would certainly eliminate a number of energy-robbing parts; transmission, driveshafts, differentials and make the drivetrain more modular and provide additional space for other energy storage/creation devices. Like so many things, in-wheel motors have already been done, but technology and our ability to integrate them into wheels has changed a lot since the first in-wheel m

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