I love the Saleen. A very good example, run by ACEMCO Racing in the American Le Mans Series, will be racing at Le Mans this June. And a somewhat older version driven by the rapid John Young, races when he can get the money together in the Speed World Challenge and strikes terror into the hearts of Corvettes!
People need to find out about these cars and the Cadillac CTS-V which will blow the doors off BMWs and Audis and are track ready right off the showroom floor.
I think the Corvettes will be just fine. You don't expect GM to just sit there and take this, do you? My dad works there, and he drives a Z06, incidentally. They can build a vette like that Saleen, but marketability is also a factor.