I lived in a lower-tier American city (Charleston, SC) for 15 years, and this was my experience with public transportation. I had commute options of a 7 mile drive @ 30 minutes due to congestion, a 7 mile bike ride @ 35 minutes no congestion thanks to bike lanes, or approximately 2 hours bus ride on an unreliable system with no good drop off points and no guarantees in a timely arrival or space for a bicycle to complete the 2 mile walk to my office. These numbers are also one way, not round trip.
In other words, I could not use the service in any honest sense.
Perhaps a nice future is a hybrid model of public transportation plus personal transport via bicycles and scooters, especially with battery powered options becoming so robust.