I'll admit it: I ducked. The combination of the zipping sounds with the light shining in and out twisted my senses all out of whack. I felt the speed of the train even though I was sitting on my chair and I just wanted the video to end because I couldn't handle watching it any more.
The train comes flying by around the 55-second mark. I love how GoPros just give humans views of things they never thought they'd see before.