What percentage of this country lives rural?
There is NO mass transit-—we take care of ourselves.
Some rural counties are already in trouble because their deputies have already used up the annual budget for fuel.
Since you asked.
https://www.statista.com/statistics/985183/size-urban-rural-population-us/
“In 2020, there were approximately 57.23 million people living in rural areas in the United States, compared to about 272.91 million people living in urban areas.”
Rural parts of NJ would just require those people to drive a shorter distance to the closest mass transit hub; I don’t even know they’d save money at that point (and if time = money, then they wouldn’t save anything).