Hanomag 3/16 of 1929.
Dirk in Texas emailed this family photo over late in 2009, wondering if the car could be identified. A fellow member of the VSCC identified it as a Hanomag 3/16 cabriolet, built in 1929. With Dirk's permission, the photo has now been added to this gallery of vintage motoring images. It was taken in 1937 and shows Dirk's Great-Uncle stood inside the Hanomag, parked at the side of a road in Kassel, Germany. When I first saw it, thoughts of the BMW Dixi (a licence-built Austin 7) came to mind, but there were a number of key differences which meant it had to be something else.