We move on to the heart-stopping new video of the deadly train crash in spain. At least one american on board among the 80 killed. Look at this tonight. That train rocketing down those tracks,... See More
We move on to the heart-stopping new video of the deadly train crash in spain. At least one american on board among the 80 killed. Look at this tonight. That train rocketing down those tracks, slamming into a barrier, caught on tape. Tonight the driver of that train, reportedly revealing more about his speed before the crash as we now hear from an american on board. Abc's nick schifrin is at the scene in pain tonight. Reporter: The moment of impact. The train racing around the bend, and then violently careening off track before the camera cuts out. Watch again in slow motion. Right there. Experts say that's the critical moment. The second car begins to leave the track, setting off a chain reaction. Each passenger car -- carrying 25 people -- and then the engine, twisting and toppling. The driver reportedly admitted he was racing 110 miles an hour. More than double the speed he was supposed to be going. It was too late for him to take any action. He would've had to start applying brakes probably a mile before the train entered that curve. Reporter: We reached 18-year-old stephen ward on the phone. The car leaned sideways for less than two seconds. Reporter: He was sitting in the eighth car, on a mission for his utah church. It never crossed my mind that we were crashing, there wasn't time. Reporter: Within moments, the victims all around him. Cars in flames. Others ripped apart like tin cans. Reporter: In the u.S., passenger cars must have stronger frames. That means fewer fatalities in crashes. And a new system will soon be ushered in that will automatically slow american trains down when speeding. And if spain tonight, the driver whose speed might have caused this tragedy is under investigation. Tonight you can see the crane behind me to remove the final two cars from the track. They're talking to the driver and reportedly he was only a few minutes late. David, they're asking him whether he was just trying to make up time.
This transcript has been automatically generated and may not be 100% accurate.