If we had a high speed rail network in America, we could move stuff around at about 1/3 the speed of flying it with 1/2 the energy. Probably be quieter, too. I enjoy traveling by train more than plane because of the less crowdedness, the less security bullshit, and having lots and lots of room. But it takes 8 times as much time, which is ridiculous.
It's also speculated that trains are in fact cheaper, due to lack of extensive subsidy. If so, cheaper transportation can only benefit the economy.