1) Coachbuilder of Germany 
Keinath Automobilbau is a car manufacturer based in Reutlingen, Germany owned and operated by Horst Keinath. The company began by producing a convertible variant of the Opel Monza, and the Vauxhall Cavalier Mark 2. Along with Hammond & Thiede and Voll, Keinath produced their convertible version of the Opel Ascona (badged C3) from 1983 to 1988. ==R...