Re: Insurance
"You absolutely will still have insurance even if you take the driver out of the equation. Maintenance, or lack thereof will pin the liability on YOU."
You're assuming that you will continue to own the car. You won't. Why would you? If you pay a simple subscription service of $5 a month, you get an app that can summon a self-driving car to shuttle you around wherever you want to go.
Don't think 'car with improved cruise control'. Think 'taxi with 90% of the expense taken out'.