The German Schienenzeppelin (means Rail Zeppelin), the prop-driven V12 locomotive, developed by Franz Kruckenberg in 1929

This is the sort of thing that makes one miss the times where design did not have to be practical or optimized. This is some crazy stuff, and beautiful!

“The Schienenzeppelin or rail zeppelin was an experimental railcar which resembled a zeppelin airship in appearance. It was designed and developed by the German aircraft engineer Franz Kruckenberg in 1929. Propulsion was by means of a propeller located at the rear, it accelerated the railcar to 230.2 km/h (143.0 mph) setting the land speed record for a petrol powered rail vehicle. Only a single example was ever built, which due to safety concerns remained out of service and was finally dismantled in 1939.”

Look at the 1 minute mark.