Legend has it that on one rainy Texas morning not far from the San Juan Missions, a bus full of children had engine trouble.
There were about ten children plus the driver on board this bus which unfortunately stalled on some railroad tracks on the Southside of San Antonio. It was said that the train engineer couldn't stop the train which was carrying tons and tons of weight. It was then the occupants of that bus had met their fate.
The thing is, this story didn't make the local newspaper or any reports of an accident. As far as the truth goes, the accident never happened in San Antonio. The accident occured in Salt Lake City, Utah in 1983.
To this day, the story lives on. If you stop on the railroad tracks and put your car in neutrual, apparently the children will push your vehicle to safety, uphill. People have tried the theory and put baby powder on the back of their ride to witness tiny handprints that resemble the children.
Investagators have looked into this urban legend and said that there is a little bit of an incline that isn't noticble to the human eye of the road where the tracks lay. This is why the vehicle rolls forward. As for the fingerprints, they're already there when you close your trunk. Even running your vehicle through the car wash doesn't completely remove the prints.
The track legend even gained national attention. Check out this clip from SyFy.