Both Japan and Europe have successful high speed train systems, so the technology exists.
I propose that the US develops a high speed train system, which includes retro-fitting some current tracks used by AMTRAK to create a more convenient alternative to air travel.
This will create jobs, can promote the use of green energy sources if done right, and can provide an alternative to air travel, which, as prices continue to go up, the service and experience continues to get worse.
Riding the Shinkansen in Japan is a pleasurable experience and is a great way to see the country, as opposed to flying, where you really can only see clouds.
With all the technological innovations we've had over the past 20 years, not having a high speed train (other than Acela) in 2013 is downright criminal.