Originally designed as invalid cars by Czech brothers František and Mojmír Stránský in 1942, the first “Oskars” (“car on axle”) were simple tube-framed cyclecars with a seat next to an engine, inspired by the British Morgans. Around 10 were built. With refinements, and adopting motorcycle sidecar construction techniques, the brothers Stránský covered their new designs in a leather-like vinyl, Igelit, to save both weight and raw materials costs.