Appreciate the feedback.
Most seem to be assuming a similar ownership model to today, and it was this future I was fantasizing about. A vehicle that's only used for transportation a very small part of the day should be kept busy, (It's the American Way), and while others have postulated everything from hiring it out to Uber, to simply having it finding it's own parking space, or doing it's own fill up, I was considering some more creative uses.
If the hardware is already sitting in my garage, why pay for some other robot to tend the hedges. If I've already spent $50k for the basics, why not have it doing all the grunt work rather than paying others to run my errands.
I actually drove a cab once and know how passengers clean up after themselves. Not sure I'd want that in my car, but, if it could run to a local orange grove, pick a juicy ripe one off the branch & have it back for my breakfast, that's an add on option I might opt for.
Much of the car ownership thing was about bragging rights. Why change a working model. When Rex is driven to the park, then walked, and cleaned up after, by your RR Deluxe, with the Doggy Do Do option, the neighbor ladies will swoon. When your RR Deluxe, with the Heavenly Hostess package, serves guests around the pool, your buddies will cringe as their wives envy yours.
The marketing options are endless. Be the first on your block with a RR Deluxe, Home Security Package, available with 12 gauge or Laser options.
The heavily chromed hardtop convertible model that mixes frozen margaritas as you cruise the beach, then disappears and returns with a blanket, an umbrella and a box of Super Sized Condoms, will sell like hot cakes, or hot tamales depending on your local.
These things are the future I tell ya.
A chicken in every pot & a Rollin' Robbie in every garage.