i am afraid i have some bad news for @OldFriendSaysHello
Miami has the slowest traffic speed in the known universe !
the chart below maps congestion ( increasing to the right ) and traffic speed ( increasing towards the top of the screen )
the good news for @OldFriendSaysHello is that the slowest, most congested cities are also the most prosperous …
this is sort of the trade off. you can have a rich megacity with traffic and rampant crime - or you can have a clean small town with nothing much going on.