Self driving cars is indeed a cool technical problem to solve if you asked an engineer, but if you asked society what it needed I doubt self driving cars would be the answer.
Flagstaff, AZ (pop. ~70,000, and double that in the metro area) has colder average lows than NYC during the winter, and several times more snow.
It's the closest major(-ish) town to the Grand Canyon, which is about 75 miles away.
Las Vegas (Aptiv), Pittsburgh (Aptiv, Aurora, Ford, Uber ATG), Dearborn MI (Ford), Miami (Ford), Washington (Ford). There's also a retirement community in Florida that Voyage is testing in.
By now even companies like Tesla and Volvo can do most of what any one can do. And they actually have usable cars.
Google inventing AGI will be a great deal though.