Cars and TransportationAn early Opel hit: the Kadett To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoCars and Transportation12/27/2017December 27, 2017In 1935, Opel became the first German carmaker to produce over 100,000 units a year. It also launched the first German production car with a unitized body: the Olympia. A slightly downsized version became the Kadett.https://p.dw.com/p/2YkBaAdvertisement