Fritz Fend, an engineer, developed a small three-wheeled vehicle for disabled drivers, the Fend Flitzer, built in Rosenheim from 1948. Early examples used hand-operated push-pull steering for propulsion, and Fend later fitted a 38 cc Victoria auxiliary bicycle motor, followed by 98 cc Fichtel & Sachs and then Riedel motorcycle engines that raised the top speed to 75 km/h. The first buyer was a paraplegic man from Offenbach, and the…