AP doesn’t provide much detail …
http://news.yahoo.com/runaway-rail-car-kicked-loose-teen-hits-york-173638773.html
[SNIP]
Footage released Friday by Oneida County officials shows the rail car barreling down on Utica’s Union Station around evening rush hour on July 21. Seconds later, a video camera on the station platform shows the car hitting the 100-year-old locomotive and ramming it through a station wall.