Amazing back in 1944 they actually were for the fist time testing the ~Flying Jeep ~ at 400 feet ! Introducing the Hafner Rotabuggy ! An example exists today at Museum of Army Flying, in Middle Wallop, Hampshire England. Story Link: http://www.todayifoundout.com/index.php/2015/09/british-flying-jeep/ This video @ 1 min 40 seconds also has good images etc. Spoken in Russian, it has English subtitles, worth watching. Dear Mr. Elon Musk, Can you partnership with Jeep & build an awesome new 4 passenger flying Jeep Please! Can you imagine flying your modern Jeep around, landing, folding the rotors back, & then Driving down the trail?