There have been two F1 teams called ATS. The first was an Italian organization, known as Automobili Turismo e Sport; the second a German outfit known as Auto Technisches Spezialzübehor. Bizarrely, the first was the second of two F1 teams run by its owner, while the second was the first of two F1 teams run by its proprietor.
The original ATS was owned by Giovanni Volpi, the second Count of Misurata, who inherited a great deal of money at the age of 21 and set up a racing team, which entered F1 in 1961 as Scuderia Serenissima. The Count soon fell out with his partners and so joined forces with a group of disaffected Ferrari employees, including chief designer Carlo Chiti and team manager Romolo Tavoni, to form ATS in 1962. Later, after this had failed, Volpi built the Serenissima V8 engine that was used (briefly) by McLaren.
The second ATS was launched by German aluminium wheel magnates Gunther Schmid and Erich Stahlschmidt, in order to publicise their business. They bought Roger Penske’s F1 cars at the end of 1976 and a year later also acquired the assets of the March F1 team. Neither programme was successful so Schmid began building his own ATS cars in 1979. In the end the two partners fell out over money and in 1985 ATS dropped out of F1. Schmid sold his shares in the wheel business and bought a rival firm called RIAL Leichtmetallfelgen GmbH. He returned to F1 in 1988 with a new team called Rial. It closed after just two years.
There have also been two F1 drivers called G Berger, but that is another story.