you are simply part of the problem.
argue against every major form of fast public trans just because it hasn't been implemented well here and therefore it must be bad.
ignorance. part of the problem.
By all means, what do you suggest then?
If the cost outweighs or is equal to the cost of commuting by yourself in your car, and unless the time saved is huge, people are not going to use it. In most cases, taking the train is not faster than a car, so it would be pointless. Really, which would you take if the cost and time were equal, riding on a train with a bunch of other people, or by yourself in a car? Most Americans would prefer the car.
Now, yes you could argue the cost of the car, but you have to realize for a lot of people it is a necessity just for getting groceries, taking your kids the various places they need to go, and the freedom it allows you. Most places in America do not have corner shops and things like that where you can just walk to and from it. There's other costs than direct costs involved and all must be accounted for. If they were to tally them all up, for instance by doing an average of what it costs (including subsidies, positive and negative externalities) to commute to various places in a city, and then show them to people, they might be willing to think about changing how they commute.
If they could experience a halfway decent example of it, I think people would be willing to use public transport. The problem is, in the US that is going to require things that are going to be difficult to convince people for. The costs to build it alone make people cry foul, and that's with their estimates (which pretty much always are far short of the actual costs).
One of the reasons why AmTrak has been allowed to live on is that the minor amount it does help to alleviate congestion is factored in the cost. It is well known that the government would love to push people into more public transportation, but Americans have routinely rejected it. Most of it is not good enough to get people to be willing to give up their car which offers more comfort and more freedom.
I would love for there to be an extensive network of high speed trains, but there's a lot that stands in the way, and its very tough to make an actual case for it right now. Hell, AmTrak has soured people on trains in general. They need to make small progress. Improving the current passenger train situations in most cities would be a big step. People's perception of public transport needs to change a lot. Right now the average American views it as a disgusting herding of people where you're likely to be robbed, groped, and generally made uncomfortable. Oh, it also happens to make a nice target for terrorists. It is going to be a tough sell to America.