Lou Costello, one half of the historic comedy team Abbott and Costello, climbs atop a souped-up three-speed (generator, front and rear lights, speedometer), with an assist from radio “Give-Away King” Adolphe Wenland, who, yes, gave stuff away to  listeners, at the behest of various companies pushing their wares. The bike was one of the Hollywood promoter’s  gifts/products du jour. Photo: Ernest W. Walker.