Peugeot 402 Eclipse had a retractable hardtop in the 1930s
Buckminster Fuller’s Dymaxion Car
Amiot 340 was the last in a series of fast, twin-engine bombers
which fought with the French Air Force in limited numbers during the
Battle of France.
Boeing Model 247 with streamlined Sedan.
On January 19, 1937, Howard Hughes set a new transcontinental speed record by flying non-stop from Los Angeles to New York City in 7 hours, 28 minutes and 25 seconds in his H-1 racer.
Lockheed Model 8 Sirius was a single-engined, propeller-driven
monoplane designed and built by Jack Northrop and Gerard Vultee while
they were engineers at Lockheed in 1929, at the request of Charles
Lindbergh.