The heat is still a byproduct on electrical motors. But the primary means of heating the cab is by a Heat Pump.
That said, maintenance is practically zero on an EV. The motors are designed to last about a million miles, no oil changes, no filters, the only fluid you will add is windshield cleaner. Topping the batteries is about $20 and that’s good for ~300 miles. If you have solar roof, your house can charge your batteries. If you have a storm; your car can power your home.
Just a matter of time before you have your car drop you off at the airport, tell it to go home and go into the garage and then come and pick you up when you get back
Important point here: in an electrical system that gets its power from a battery, by design, you want to eliminate the heat because heat represents inefficiencies in the system and maybe a reliability hit to the system. Inefficiencies in the system means wasted power and then you have to attach massive heavy heatsinks on the parts dissipating the power to reduce their operating temps. It is a known fact that operating temperature will inversely affect semiconductor reliability. Lower temperature means longer life.
Heavy heatsinks means more weight and then less distance traveled before the battery runs down. Also, remember that a vehicle has to operate in hot temperatures in addition cold temps and what is beneficial at low temperatures is not so at high temps. Gasoline/diesel vehicles have over a hundred years start on EVs and do pretty well. Are they inefficient? Heck no, but they don't have to be. Well, not on the scale of an EV.
Solar panels on the roof — good idea. It is a start but EVs are not quite there yet. Now if we could switch over to nuclear energy, then all electrical vehicles make more sense.
Also, how about this — Electrical version of a “Gas” station that charge and store precharged batteries packs. Simply replace your old pack with an new one in 5 minutes and you are on your way versus the hours plugged into the wall.
All of the heavy duty power conversion can be done at Battery “Gas” Station and with the safety issues managed accordingly. Heck, you could probably run the AC charging voltage at a much higher voltage ~1KV, 2KV, 10KV and speed up the charging process. Running that high of a voltage in your home would be a safety concern.