I don't think people full comprehend the price drop that is imminent. The total cost of ownership per mile for a car in the U.S. right now is about $0.60. I was watching a panel the other day where someone calculated the cost per mile of a fleet of self-driving on-demand electric cars at $0.08. That an 86% reduction. People might have their misgivings about any of this stuff... electric, self-driving, carshare, and o…
If a Tesla Model S costs $70000, even if electricity and maintenance are free (and there's no premium for self-driving) you would have to drive it 875000 miles for it to cost $0.08/mile. This seems like the type of thing that is literally unbelievable without more evidence than "I heard somebody on a panel say this".
Most personal gasoline cars last approximately 200,000 miles, but people rarely keep them that long because for the average driver the car is 10-20 years old. The interior will wear out long before the engine. If the car manufacturers built the drivetrain to last 400,000 miles, they would just be wasting money.
If the car is running 24/7 at 30 mph, you would top 250k miles per year. I imagine they will design the cars to last more than a year, potentially a few, so 750,000 miles is not off the table.
Also in the world where a car is an autonomous income producing asset, initial cost matters a lot less and total lifetime cost matters a lot more. Businesses will do the math and buy vehicles that minimize their cost. Automotive engineers will put more effort into reliability because fleet owners will have data to measure.
It's a different world. A lot of our current assumptions will get rethought.