You don't really maintain electronics, you swap them out when they are detected to be bad. Electric vehicles don't need tune ups or overhauls, it is light maintenance and full on component swaps. Send the defective components back to the factory for refurbishment and/or recycling.
I don't think $50k LIDAR sensor suites are disposable like that and the computer integrations is pretty sophisticated I'd imagine. These cars will take a beating.
Nah. The local car dealerships and Tesla service centers seem to be pretty busy doing heavy maintenance on electric vehicles. The drive train might be marginally simpler but there are still a lot of moving parts that break or corrode just like any other vehicle.