Imagine for a moment that you've been handed $100,000 and instructed to spend it on any single car other than a Corvette (one of which, presumably, you already have).
So what'll it be? A BMW M5? An M-B E63? As for me, I'm going with the recently introduced '09 Cadillac CTS-V. With a 550hp, LS9-derived engine and a Nurburgring-tuned suspension, this killer Cad is the closest thing you'll find to a four-door ZR1.