The Desert Ship (Wüstenschiff), 40 m long and 13.5 m long, 12 m wheels. powered by two large diesel engines and capable of carrying 300 passengers, in reality it is a liner on wheels to cross the Sahara.
The German inventor Christian Bischoff was unable to realize his dream on a real scale, but nevertheless created a miniature replica of this machine which would surely have panicked people's minds, it was then in 1932. This idea had been germinating for 5 years and he even filed patents for all countries with colonial possessions.