What are the supercars of each car brand?

Audi R8, Chevy Corvette ZR1, BMW M3, Nissan GTR, Mercedes Benz SLR(McLaren), Toyota Supra, Porsche Carrera GT, Ferrari Enzo, Lamborghini Reventon, Chrysler ME Four Twelve (concept car). Some of these cars might be old or not made anymore. BUT were or are concidered one or if not, the best models that company made..