Wiki says: "The CSX 8888 incident, also known as the Crazy Eights incident, involved an unmanned runaway train led by CSX Transportation locomotive #8888, an EMD SD40-2, that was pulling a freight train consisting of 47 cars, some of them loaded with hazardous chemicals. The train ran uncontrolled for two hours at speeds of up to 51 miles per hour (82 km/h) through the U.S. state of Ohio. It was finally brought to a stop with the help of a railroad crew in a second locomotive, which caught up with the runaway and coupled to the rear car.
The CSX 8888 incident inspired the 2010 motion picture Unstoppable."
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I say: This is a bogus movie because the 3000 HP chasing locomotive can touch 105 kmph at most where the movie tells that the loco was running at 130.
BTW, the speed in the movie suggested the same thing I felt- it was too slow for 130. What we see with the Rajdhani? So slow? I don't think so. We can at least feel the difference between ~90 and 130. What do you say railfans?