Albert Widmann with the car engine running. He had nearly died of carbon monoxide poisoning from the exhaust fumes. This engine exhaust testing inspired the development of gas vans. Back in Berlin, Reinhard Heydrich immediately set to work within the RSHA for the development of, in the words of Heydrich's subordinate Walter Rauff, a "more humane method of execution" than the "Einsatzgruppen" firing squads which had been used. When a prototype gas van was driven to KTI, Widmann explained to his young chemists that by adjusting the timing of the ignition, one could maximize the amount of poisonous carbon monoxide in the
Treblinka extermination camp were gassed to death with the exhaust fumes conducted through pipes from an engine of a Red Army tank. SS-"Scharführer" Erich Fuchs was responsible for installing it. The engine was brought in by the SS at the time of the camp's construction and housed in a room with a generator that supplied the camp with electricity. The tank engine exhaust pipe ran just below the ground and opened into all three gas chambers. The fumes could be seen seeping out. After about 20 minutes the bodies were removed by dozens of "Sonderkommandos", placed onto carts and wheeled away. The system