This drawing is part of an ad for the Trionette. It was built from 1921 to 1930 by the Trionette-Gesellschaft mbH in Bremen, Germany. In 1923, the company moved to Haste near Osnabrück. The Trionette was not offered as a complete car, but as a kit which enabled the buyer to convert his motorcycle into a car. He had to remove the front wheel together with the fork, the handlebar, the saddle and the footrests. It was mainly used to convert the famous Mars motorcycles with Maybach engine. The body was made of plywood.
