The "Dixi" was BMW's first automobile -- a car built under license from the Austin Motor Company. (That's probably why this little car looks so much like an A7.) Dixi's were manufactured in the Eisenach factory where the Wartburgs of the GDR were later made.
The dapper young driver seems very proud of his little roadster -- and with wire wheels, a two-tone body, and a windscreen that looks like it can be folded down or flat, he appears to have "sprung" for the sporty model.
This photo appeared in MINUTIA Issue 15, Number 3 as the Mystery Minicar.