An interesting trailer about the freight train artists/monikers in the usa. The movie is still in production, i'll let you know if and when it will release.

Teaser: Ramblin' is the documentary of a nationwide search for the anonymous and unknown artists of freight train monikers. This art form has been prevalent on the rails since the Great Depression but is often overshadowed by larger, aerosol train graffiti.
The film features artists such as the Colossus of Roads, The Rambler, Smokin' Joe, The Kodak Kidd and Conrail Twitty.