Built to be a 4 door coupe. As it was built; BMW, Audi and VW pulled up their own interpretations of the 4 door coupe. This is the first picture [just released today] of the 2011 CLS.
Based on the Golf Mk5, this was built to be an upscale, less practical and more expensive Golf. Built to be sold on good looks alone, Jeremy Clarkson justified buying one by saying "you didn't marry your wife because she was easy to wipe down?" It is by far one of the best designed hatchbacks of all time.
BMWs have always had a controversial look to them especially the Z series. When BMW finally brought out the redesigned Z4 I went all gasp and awe. It also gets a hard top, first in the Z series, which made it look good top up or down.
DKW is one of the 4 companies that formed the 4 rings of Auto Union [now Audi]. This was built as a high speed aerodynamic runner hence its name [Monza is a high speed track in Italy]. It broke some speed records at Monza btw, I don't know the specifics either, but I know its pretty.
The design is similar to #4 although this was released first. The engine is from a BMW M3, the handling is a bit off and its named after a German F1 team.
The SLR was released as a homage to the 50s gullwing racers and Benz were releasing back to back "special editions" for them. None really stood out that much, except for the last one, the Stirling Moss, which went all out. Named after the 1955 Mille Miglia winner [yup thats him] its a wonder how something so extreme looking is road legal.
Built to be a competitor to the #1 car, it was a honestly good car but had an insane price tag. Despite being owned by people like Elvis, it really was a financial blow to BMW.
http://crossdrilled.blogspot.com/2010/08/best-designed-german-cars.html