Is this guy a sleeper? How would he know the speed of the train.

"It was a very high-speed collision," Rep. Jeff Denham, R-Calif., who was on board, told Fox News. "There was no braking that was felt. We hit an immediate impact and went from 70 to zero very quickly." 

http:// www.foxnews.com/politics/2018/01/31/train-carrying-lawmakers-to-gop-retreat-involved-in-accident.html