"They have created these amazing new aircraft that really 10 or 15 years ago would've been unimaginable. I think there's something innately attractive about being able to leapfrog all of your terrestrial obstacles. Who hasn't wished that if you live in the suburbs that, you know, something could drop into your cul-de-sac and 15 minutes later you're at the office."
— Roger Connor, curator of the vertical flight collection at the Smithsonian's National Air and Space Museum.
They have those in North America’s pre automobile major metros as well as all over Western Europe, Japan, and S.Korea. Even China and some metros in S. America. It’s called the trains with dedicated rights of way. Though I guess it’s twenty minutes from my Cul-de-sac to downtown by train. Not fifteen.
Of course some suburbs, which really are exurbs, are car dependent dystopia with no services and twenty, or more miles, from the city center. And not a town center based walkable suburbia connected to the region by rail. Those exurbs and auto centric post 1950’s cities and suburbia probably would love an air taxi stop in their Cul-de-sac.