100s of tons of steel vs. one of nature's fiercest phenomena. This apparently occurred on 7Jan2008 on the Union Pacific railroad near Harvard IL.
How was this recorded? As one of the youtube comments explains:
All American locomotive cabs have on-board video recording equipment fitted. This is due to the fact that there are so many grade crossing violations by cars and trucks. The railroad companys [sic] got pissed off with these retards trying to sue the RR company hence the camera's [sic]. This one was obviously left running in the trailing loco's cab.
For another spectacular view of a tornado, Roger Hill and crew put a camera in the path of a tornado:
Not to miss the cow, passing by...