Louis L sends us the 1938 Hispano-Suiza H6B Dubonnet "Xenia” Coupe - a one-off Art Deco aerodynamic supercar built in Paris.  Styled by Jean Eduard Andreau with airplane-inspired teardrop aerodynamics, and hand-built by coach builder Jacques Saoutchik - the car features a wrap-around panoramic windshield, rear-hinged (suicide) doors, and gull-wing plexiglass side windows.  Xenia was commissioned by French aperitif heir, WWI fighter ace, racecar driver, and inventor Andre Dubonnet as a memorial tribute to his late wife, Xenia Johnson.  Powered by an 8.0 liter straight- six aircraft-derived engine, the car could exceed 110 mph.  Another interesting feature was its independent “Hyperflex” coil-spring system invented and patented by Andre Dubonnet.
More pics and information here.