Yeah a rail system is possible anywhere but will it beat the convenience and time saved just driving yourself. America needs a culture change for mass public transportation to be a viable option.
Bruh I lived New England for a while and I can tell you yes a rail is way more convenient when consider total time spent; even though Boston’s system is meh.
Taking the orange line in Wellington(semi suburbs) to the red line in downtown Boston was cheaper and less time involved. Think about it this way;
Leaving the house (look up fellsway)
Jump on the freeway (more traffic & possible tolls)
Getting to downtown finding free parking
Giving up and paying to park
Buying gas
Even if it adds 15 mins it’s a better option, especially on your wallet. Then you have the T for long distance. Will you need a car on special occasions, yea but day to day rails are fine. There’s been a few public surveys where the majority supports public transit.