Free Public Transportation?

My hometown and the metro area isn't so terribly crowded with cars,

but the downtown areas of most American cities tend to get very

crowded.

Here's an idea being tried in several European cities: free public transportation.

I wonder if such a thing will ever fit the American landscape.

https://popupcity.net/estonia-to-become-the-worlds-first-free-public-transport-nation/

Check it out!