Very cheap, energy efficient transportation, and the government wants to kill it

Personally, I don't care about "energy efficient" transportation per se.  I figure that the market will figure out the most efficient way to transport people and energy costs are no more important than other costs.  Yet, it seems more than a little hypocritical for the government to try making this type of transportation so difficult and costly.

Let's say you wanted to get from New York to DC this evening. You could take the government-supported train system - which would cost you $153 or more - or you could take a bus, which gets no government subsidies, for... $19. . . .
[These buses] are now, as CATO transportation expert Randal O'Toole puts it, "the nation's fastest growing transportation mode." He adds:
"They do so with almost no subsidies... Intercity buses are safe and environmentally friendly, suffering almost 80 percent fewer fatalities per passenger mile than Amtrak and using 60 percent less energy per passenger mile than Amtrak." . . .

I did a quick search and I found that for this coming Monday the average Megabus fare is $14.73.  The average Amtrak fare is $160.

If you want to see more on the efficiency of these buses, this is of some use.