He goes for it and… flop fail.
Just wait for it. This guy is talking to his friend on camera about whatever, when at the last moment some guy in the background runs at top speed, and jumps into the train closed doors. He smashed into the train and falls to the ground. The camera man appropriately laughs.
When shooting for Transformers 3, a real action scene develops. On DC streets, the yellow Camaro, Bumble Bee, t-bones a Washington DC cop driving the wrong way at the wrong time on 3rd St SW during the filming of a scene.
Here’s a better view of the actual impact: