Not a curvy car, but the same philosophy applied. Shown here a Bugatti Model 100P Racer wearing "Bleu de France".

"The 100P was nearly complete when Germany invaded France. As the Germans closed in on Paris in June 1940, the Bugatti 100P was removed from the furniture factory and loaded on a truck. The 100P was taken out into the country and hidden in a barn on Bugatti’s Ermeronville Castle estate 30 mi northeast of Paris. Because of France’s surrender, the aircraft never progressed beyond the initial design phase; it was built to win the Deutsch de la Meurthe Cup, an aviation race consisting of two 10 lap stages around a 100 km (62 mi) course near Paris."

Way More Info @ http://oldmachinepress.wordpress.com/2012/11/01/bugatti-model-100p-racer/