Treehugger has a interesting post from earlier this week regarding the amount of jobs the high speed rail industry could create in the United States (estimated to be nearly 1 million new jobs).
I highly suggest this read. As the economy continues to be sluggish and the outlook for U.S. car companies doesn't look great anytime in the near future, high speed rail could serve as a huge source of new, clean, green jobs.
Oh yeah, and we could also be transporting 500 million people around on low-emissions high speed trains? Sign me up in support.