Is it a plane? Is it a train? No, it's a prop-driven V12 locomotive!Peter Orosz3/21/11 9:30am68EditPromoteDismissUndismissHideGo to permalinkTime again for outrageous pre-war German vehicle designs. You’ve already seen the Nazi rocket plane built to nuke New York from orbit. The propeller-driven aluminum train Schienenzeppelin is miles tamer but every bit as magnificent. And unlike the Amerika Bomber, it really ran—at 140 mph in 1931!