They had to do something. The vette is any other fast American car... Mustang, Camaro, Challenger.... Goes real fast as long as it's in a straight line. Toss it on a track, and all that horsepower gets left behind by "lesser" cars that were much better designed. Smaller motors that made more power, suspension meant for non-grid roadways. Wouldn't feel too bad. Lamborghini has also been left in the past. They put emphasis on track cars like Corvette, and consumer models are snipped at the balls before hitting the showroom floor.
This doesn't make much sense. The Corvette (especially the ZR1 and Z06) and the Camaro ZL1, 1LE and the most recent Z/28 were all built for curvy roads/tracks with things like Brembo 6 piston caliper brakes, mag ride suspension, computer controlled rear ends, short ratio gear boxes etc. I agree that the Mustang, Charger and Challenger are more geared toward only going down the drags strip, but GM upped their game in the road course realm in the past several years.