> doesn’t mean it can’t exist or wouldn’t be desired if built.

I never said anything contrary to that. I'm just saying it would be wild to see a metro area that size with that high of average development.

The above commenter suggested:

> It might literally be nowhere in the US.

It's definitely not a thing in the US. It's almost certainly not a thing in Europe either, but I'm open to being proven wrong there. It might exist in China, I haven't looked. A 100mi radius circle is massive in area. Pies are squared, if you get my point.

I'm actually inclined to believe it was a typo for 10 mile radius.