[gshubert17]

Robert A. Heinlein wrote a short story in 1940, "The Roads Must Roll", featuring long-distance, high-speed moving roads, not just sidewalks.

https://en.wikipedia.org/wiki/The_Roads_Must_Roll

[i80and]

An idea not entirely unlike this was also used in Isaac Asimov's "The Caves of Steel".

[guard-of-terra]

And the entirety of Strugatskies' XXII Century Noon.

[glenra]

Right, and Heinlein's solution to "whizzing past the bakery" was that there would be food service traveling along the road with you. In NYC, maybe very skinny food carts?