Maybe in your region they're still around, but when I say they're "hard to find," I mean it would probably take me days to locate one. Any attempt to teach kids how to use one would probably require a road trip. Hell, even calling a taxi is becoming outdated technology. All our cab companies have started going out of business ever since Uber came to town. It's easier, faster, and cheaper than a traditional taxi. I appreciate wanting to have an understanding of older technology, but there comes a point where you're just learning unnecessary information.