This new video from Mercedes-Benz sees TV host Jay Leno paying a visit to AMG in Stuttgart to see the new SLS AMG Roadster, and heading straight to the AMG test track – after asking David Coulthard for a few pointers. He then helps out in the engine-building department, assembling that glorious 563 hp V8 unit. The open-topped SLS AMG has near-identical performance to its tin-topped sibling, taking 3.7 seconds to hit 60 mph, before hitting (an electronically limited) 197 mph.