The Schienenzeppelin

https://commons.wikimedia.org/wiki/File:Bundesarchiv_Bild_102-11902,_Berlin,_Schienenzeppelin.jpg
Image: Wikimedia Commons

The land speed record for a petrol-powered rail vehicle was set way back in 1931, when aircraft engineer Franz Kruckenberg experimented with a “rail zeppelin” on German railway lines. An aircraft engine drove a rearward-facing propeller to accelerate a lightweight aluminum body to the startling speed of 230.2 km/h (143.0 mph), a railway record that held until 1954.

The vehicle evolved over a few years but was eventually dropped in favor of other high-speed designs.