A long wait at a railroad crossing
Posted February 22, 2010 6:15 a.m. EST
There is a railroad crossing near my house, and as long as I'm not in a hurry, I enjoy watching the train go by. I don't know if I would enjoy waiting for this train to go by -- a 3.5-mile-long freight train that Union Pacific is testing. Popular Mechanics has details and a (5-minute-long!) video of the train going by.