http://classicrendezvous.com lists only two Austrian marques, Austro-Daimler (SDP) and Capo, but I am sure there were others. These were probably the only ones exported to the U.S. Before 1990 I assumed that SDP and Capo were part of the same company, after a friend in the bicycle lubricant business saw my first Capo in 1974 and said, "A Capo -- That was the top of the Steyr-Puch line." I suspect O tto Cap targeted SDP dealerships when he made his limited marketing push into California in the late 1950s and early 1960s.