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Opel Omega
American car fans will recognize this car as the short-lived Cadillac Catera. But in Europe, this was the Opel Omega. In the late ’90s, Opel decided to attack BMW and Mercedes with a V8 version. The V8 version had a Corvette 5.7-liter engine with 350 HP on tap so it looked like Opel would finally catch its competitors on the Autobahn.
Despite the great performance, engines from GM and a positive reception from car fans, Opel decided to pull the plug at the last minute and canceled the Omega V8 project. So they build only 12 pre-production cars that somehow found their way to a dozen lucky customers.