And suddenly, design was muted as World War II approached. Inspiration was buried away, along with some innovative and visually stunning design work. Skip ahead to 2005 when some curious members of BMW Classic opened a box and found the R7 bike 75 assembled – although not in shining condition. The engine was corroded, the metalwork was in dire shape, the battery was unusable, but the opportunity for restoration could not be ignored.

Various specialists at the BMW workshop discovered the original design drawings in the archive collections and conjured up the ghosts from Streamline Moderne’s past. Missing parts were sourced, others were rebuilt, the chrome was polished and the frame was painted black. And the final test, retuning the 1934 BMW motorcycle to the street, proved to be worth the wait nearly three quarters of a century later.