I was specifically addressing people commuting to their job and traveling within their immediate area. That kind of stuff could definitely be covered by biking and better bus/light rail investment without having to go everywhere. The only people who wouldn't be covered by that are people living in the country and they are a minority compared to those living in suburbs or near big cities and could still be served by public transit using park and ride stations if they have to travel to a bigger city. They would just drive to the closest park and ride station and then use the public transit to travel within the metro area. Of course if they're traveling entirely within less populated country areas then public transit won't serve them that well but at that point you can just use cars as a backup. But public transit investments could easily serve the majority of people for their daily travel needs and even if they do have a high cost the economic benefit of making it easier for people to commute to work and to cities for fun day trips will create more economic value over time being a net benefit in the long run.