NSU

The post on Cream reminded of the first track on their first LP in 1966, "NSU".  This wasn't a reference to the STD but to the German car marque, founded in Neckarsulm, which NSU is a contraction of.

"Driving in my car, smoking my cigar,
The only time I'm happy's when I play my guitar."

The Prinz model shown in the pic was manufactured in different versions through the 1960s; the Prinz 4 was a 2-door saloon made 1961 to 1973 and featured a 598 cc straight OHV rear mounted air-cooled engine.

NSU was taken over by VW in 1969 and then merged into the Auto Union group, nowadays the Audi marque is its only one. The NSU name had been phased out by 1977.