Constantinesco car chassis and parts. George Constantinescu was born in Romania in 188. His studies into soundwaves later enabled the production of sonic drills and some weapons. He invented a synchronous gear that enabled a machine gun to be used through an aeroplane propeller and then turned his attention to engines and transmission systems, developing a torque converter that eliminated the need for gear changing. The Canstantinesco car first appeared at the Paris Salon in October 1926 and went into production in 1927. However the car was unsuccessful, the public wanting 100mph not 100mpg, and the Contantinesco’s converter was not efficient in a large engine.