Along similar, but less swoopy, lines -- Teutonic? -- is this BMW R7 prototype from 1934:
A single copy was crafted in 1934 by design engineer Alfred Böning. His vision was a
departure from the "bicycle with motor" design still prevalent in the 1930s. The R7
incorporated sweeping enclosed bodywork, a pressed steel frame, valanced mudguards
and then-innovative telescopic front forks.
More info and pix.
(I first posted this to cleanmpg.com on 11/07/10)
