It's the Holy Grail of rail dispatching.
Europe and Asia lead the world at the moment in maglev technology. China even has it's own operational maglev passenger system.
As with most of the rail innovations changing the face of transportation world wide, the USA sadly lags far behind in this area too. However, with the commitment shown by the Obama administration to pump large sums of money into rail development, our poor technological standing in this crucially important segment of our national and economic infrastructure, should change dramatically.
I can hardly wait.