The photo is of German newlyweds in 1955. Name the manufacturer of their "limo".

Ten years after the end of World War II the rapid recovery of the West German economy still had some way to go. Tight budgets and shortages of some products meant that personal economies were still necessary. Tiny vehicles of the sort depicted in the photo were popular as an individual transport solution that was rapidly becoming available and was relatively cheap to run.

The Isetta was one of these: an Italian-designed microcar built under license in several different countries, including West Germany. Because of its egg shape and bubble-like windows, it became known as a bubble car, a name also given to other similar vehicles, such as the Heinkel Kabine or the Messerschmitt KR200.

BMW re-engineered much of the car and the first BMW Isetta appeared in April 1955. It became the world's first mass-production car to achieve a fuel consumption of 3 litres/100 km (94 miles per imperial gallon; 78 miles per US gallon). It was the top-selling single-cylinder car in the world, with 161,728 units sold.

Initially manufactured by the Italian firm Iso SpA, the name Isetta is the Italian diminutive form of Iso, meaning "little Iso."