Ghosts on the Tracks?

There's a legend in San Antonio about a busload of children that unfortunately stalled on some railroad tracks and was hit by a train. Since the tragic accident, people have gone to the site each year to leave flowers and mourn the loss of so many young lives.

Many visitors will wash their cars, then sprinkle them with baby powder. After arriving at the site of the accident, they will park their cars on the track, then wait.

When a train approaches, the car will magically move off the tracks, then stop at a safe distance. Remaining in the powder will be dozens of little hand prints.

There's been at least one TV show investigate this phenomenon.