Would be great if you could afford the $40k and insurance to house that 4000lb hunk of precious metal you spend energy moving around everywhere you go. A bus pass is a $1.75 on the other hand...
Look at NJ Transit, in rural areas if you have a train station you get 2-3 commuter trains in the morning on week days and no service on the weekend or during the day/late at night. And thats for NJ, which has high population density even in rural areas, is physically small and is part of the north east corridor.