As two readers guessed correctly the mystery car is a Goliath Express 1100. Goliath, part of the German group Borgward, started life in Bremen, Germany, in 1931 making little two-stroke, three-wheeled trucks similar in conception to the Motoguzzi Motocarro. They attempted to carry over this three wheel setup to a passenger car but it didn’t appeal to the German public and Goliath pulled the plug on the project in 1933. This was the last passenger car the brand produced until 1950 when they launched the GP700, a completely new model with a proper four wheel configuration. Well ahead of its time, Goliath offered fuel injection on the two-stroke GP700 (688cc, two-cylinder) and on a sister model with a bigger engine dubbed the GP900 (886cc, two-cylinder). 1957 saw the introduction of the GP1100 to replace the GP900 line. As opposed to its predecessor the 1100 had a more modern four-stroke, water cooled flat-four engine with a displacement of 1093cc.
These uncommon, unappreciated and nearly unknown vans that almost smile at you were largely overshadowed by the Volkswagen Type 2. When the Borgward group raised the white flag in 1961, the Goliath brand and the Express model said their last words as well.
This Express 1100 was photographed in Salt Lake City, Utah:
An ad for the Goliath Express pickup:
The new 1093cc engine:
Goliath Dreirad (literally meaning “three wheels”). Launched in 1955, this was the last generation of three-wheeled trucks produced by Goliath: