I'm a little skeptical about high-speed trains in the US.
They seem to have priorities wrong. You see big article athat talk about "Max speed 140" and "Max speed 210" but not about reduced times from city to city.
The high speed train we do have boasts a 150 mph top speed - but averages 66 mph between DC and Boston. It saves you about an hour and a half over driviing (according to MapQuest).
I think that car companies buying up rail lines ahd mroe to do with light rail and tolley's tahtn intercity stuff. It' spretty well documented that they wanted to shut the trolley's down.
Wiki has an OK article on this
http://en.wikipedia.org/wiki/Great_American_streetcar_scandal
Be sure to read the disclaimer section "other explanations."
Aside: I'm reading a history of Japan. There is controversy about the government involvement in their development - whether the government was the primary motivating factor or small industry free market forces primary. One suspects many researchers - on either side - are driven by ideology. Same with these issues.
Trolley coverage was pretty good at one point. In one book about the GAP, they talk about trolleys running between Meyersdale, among others. I read once about a newspaper man who took a large arduous many-tranfered streetcar trip from NYC to Chicago (I think).
I'm unable to find any overall streetcar map for, say, the US in 1920.
As for general bias in the history of the automobile? You do not often see in print that Hitlers biggest US supporter was Henry Ford. We like our automotive heroes.
There has been endless investigation of the various people (usually small potatoes)involved with the communist movement in the 20th century, but not very much investigation of the big cheeses (open pun thread here) that supported the fascists.
Mick