Prius , smeeeus, we can get along fine w/o hybrid.
There's a Volvo on record closing in on 3 million miles!
That said, I think we have almost infinite mileage capacity in our existing fleet.
Well, it wasn’t 3 million miles like on a Volvo, but my father got 350,000 on a Falcon 30 years ago. He had two Falcons and 3 engines. He would tinker with one engine, cleaning valves and cylinders, then after 50,000 miles put it in one of the cars. Kept rotating them. The running board and other lower parts finally rusted off thanks to road salt (New Jersey). The Cubans don’t have a problem with road salt. ;-)