Though they don't use in-wheel motors, the concept of using the idle rear wheels on FWD cars in hybrids is already being commercialised by Peugeot / Citroen and Volvo.
(Taking clues from the ancient Porsche, no doubt.)
In wheel motor are just the next step.
Though it's more of a technological jump than a step.
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Strayed to the Dark Diesel Side
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