Jalopnik had the honour of test driving the RENNtech Mercedes C63 AMG SPEC.R. It's a beautiful car, but one of the most interesting features is the radar jamming system built into the rear-view mirror.
Amazingly enough, the system worked flawlessly in Jalopnik's test. The savings in speed tickets alone means that this car will pay for itself in time. Well...maybe not. Hit up Jalopnik to get the full test-drive details. [Jalopnik]