Central Japan Railways, through a shell company in Houston, says they can build high-speed rail between Houston and Dallas by 2020. The key is they say they can do it without tax dollars.
I am skeptical, but if the Japanese want to spend their money building this I say bring it on. In fact, I also think it would be great if Europeans who say Americans are backward because we don't have high-speed rail would also put their money where their mouths are. If it's so great, if it's so profitable, please invest your money and build those rail lines.
I am not sure the economics quite pencil out though. Lone Star High Speed Rail says the tickets will be "about" $100. Houston to Dallas is approximately 225 miles. Let's see, figure 2 persons per car, a large car that gets a mediocre 25 miles per gallon, gas at $3.00/gallon, that's... $13.50/person, vs $100/person on rail. I think my remedial math is right on that. Plus at the other end of the rail line you'll have to arrange further transportation.