The Lumina SS is sold in the middle east the way you see it here. Its likely to be called something entirely different in the US (Grand Prix). I suspect they're modifying it to meet American safety and emission standards.
whatever they name it who cares. That's the sweetest car I've seen from GM in a long time. That is 5 times better than the Impala by appearance alone and I don't care if its called "lumina". Since cadillacforums.com is a famous and prolific site and GM people are on it all the time, I hope these guys manufacture this car for the US. I guarantee it would sell.
Hear that GM?? Sell this car in the USA and you'll make mad profits. And when you release that car, don't change a thing about the exterior.