BMW only built 254 507 Roadsters between 1956 and '59. Two of which were prototypes. Some were turned into race cars, but three chassis were transformed into something completely different. This is one of those.
But first, let's see another one, the Raymond Loewy 507, which was built in France by Pichon et Parat of Sens, the car Travis called "the coolest car at Pebble." According to Hemmings, an eyewitness at the Paris Motor Show summed up the result like this: