Anne Shirley, Ann Miller and Vicki Lester take time off on the RKO Radio Pictures lot to try out their new-fangled “body sway”  Ingo-Bikes. Invented by Phillip and Prescott Huyssen and originally called the “Exercycle,” the pedal-less, chain-less vehicle is propelled by the rider bouncing and swaying on the platform, like a hub scooter.  Produced by the Ingersoll Steel & Disc Co. from 1934–1937, under the name Ingo-Bike, it can be seen in the Three Stooges classic, Yes, We Have No Bonanza, in which Curly rides up to a western saloon on said steed. Look for photos of Marion Marsh, Brian Donlevy and Claire Trevor riding Ingo-Bikes elsewhere on Rides a Bike. Photo: Emmett Schoenbaum, 1938.