The Flying Train

Shot in 1902, “The Flying Train” takes viewers on an uncommonly crisp journey aboard a suspended railcar. Throughout the two-minute video, riders see Wuppertal residents walking across pedestrian bridges and down dirt roadways more than a century ago. The city is known still today for its schwebebahn, which is a style of hanging railway that’s unique to Germany.

This led me to look up the Wikipedia article for Wuppertal Schwebebahn, which in addition to being a still-functioning hanging rail system over a century old, is—if I don't miss my guess—a double dactyl.