BMW claims that the M6 will lap the fearsome Nrburgring Nordschleife in eight minutes flat, which means that it is monster fast. Not surprising, because under the hood there's a 5.0-liter V-10 that's shared with the equally brutish M5 supersedan, making 500 hp and 384 lb-ft of torque. For city and regular highway driving, the engine makes 394 hp, but pressing a button (P for Power, surprisingly enough) liberates the full allocation of ponies. The engine is mated to a seven-speed Sequential Manual Gearbox (SMG) that offers no fewer than eleven shift options. There's no word on whether a stick shift will be offered, but we feel that it's likely because BMW is developing one for the M5 for the U.S. market. Compared with a stock 645i, the M6 has a retuned sport suspension, a speed-sensing locking differential, and cross-drilled, compound-aluminum center, steel-rotor brake discs with aluminum calipers. The M6 features a subtly aggressive body kit as well as giant nineteen-inch wheels and tires. BMW claims it will hit 62 mph from rest in 4.6 seconds and would reach 205 mph if the engine wasn't electronically limted to 155 mph. Expect it to go on sale in the U.S. sometime in 2006 at a price of around $100,000.