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Hah, I wouldn't want a vehicle that has maintenance requirements approaching a helicopter. At that point I just want a helicopter.
If hub motors need to be rebuilt every 20k miles, that means their MTBF is much higher, so we'd be tempted to push the service intervals.
I'd say hub motors need to solve some problem significantly better than non-hub motors for them to be reasonable solutions. What is that problem they solve significantly better? Cost? I'd pay extra to have something higher performing and more reliable.
Tesla's motor is something like $400, which seems pretty darn reasonable to me. Of course there's drivetrain components which add up, but you get the performance and reliability of a Tesla motor.
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