The new American Recovery and Reinvestment Act (aka "the stimulus package") has dedicated US$8 billion to outfitting selected corners of our nation with publicly-run high-speed railways.
Will we soon be zipping around these United States the way they do in places like Japan and Spain? Perhaps, but the eight billion dollars is a mere drop in the bucket; a new article from the BBC claims that it will cost $30m per mile to build the track. And we have a big country. (Designated high-speed rail lines are outlined in red above.)
So check out the map above, and the full article from the BBC. I do hope your city has been selected.