Fission modular construction system. and in one nine hundred twenty four before horse power nick. named that tree frog was the first german car to roll off an assembly line. the olympia made its debut in one nine hundred thirty five f.b.i. a international motor show in berlin a plexiglas model showed off its truss like car body framework the body and the chassis comprised a single unit that was simply mounted onto a pre-assembled drive train that included the engine. be interior was eerie featuring as it did opals patented draft prevent a lation the car was equipped with front and rear vent windows there was plenty of space inside as well.