The US Senate just apporved $45 million for a Las Vegas to Disneyland supertrain. This type of project has been "on again, off again" many times. The bill will go to the president for approval.
But don't get your hopes up just yet. There are still a few obstacles. The magnetic levitation train in question would cost about $15 billion dollars to build, so there is still more funding to be secured from other sources. The $45 mil in federal money just barely covers the environmental impact study.