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by rtkwe 2515 days ago
They don't because the energy available isn't enough to appreciably add to the range of the vehicle.
1 comments

To be fair, I am mostly surprised there are not yet EV or hybrid vans, versus PVs on the roof. Seems like stop-and-go, or lots of idling, fleets would benefit signifigantly.

I imagine vans use the battery for more than propulsion, so PVs on the roof might be welcome. Charging from a generator is probably still more cost-effective, except for some niches (e.g. boon-docking). Lots of van-dwellers have PVs on their roof.