The Mercedes-Benz S65 AMG is an extremely comfortable German-built rocket ship

As-tested price: $207,965
Drivetrain: 6.0-liter twin-turbocharged V12; rwd, five-speed automatic
Output: 604 hp @ 4800 rpm, 738 lb-ft @ 2000-4000 rpm
Curb weight: 5035 lb
Fuel economy (EPA/AW): 13/14.5 mpg
Options: Designo Mystic White edition including black lacquer, Alcantara headliner, wood/leather steering wheel, charcoal exclusive leather ($9,765); iPod adapter ($425)

OUR TAKE: "It's like a day at the spa," said a passenger enjoying the heated seat and its wonderful massage function. We agreed; we had enjoyed those same features a couple weeks prior in the "entry" S63 at $143,000, the only difference being this car comes with four extra cylinders, a pair of turbochargers, 86 more horsepower, 273 lb-ft more torque and a bigger monthly nut.

If you can afford it and you want to drive yourself, this is your car. It is as luxurious as it gets on four wheels--plus, it's a German-built rocket ship. The earth-rotating power from its twin-turbo V12 is nothing short of gasp-inspiring, regardless of where you are on the speedometer when you stuff your foot to the floor. Three figures come quickly, effortlessly, but completely controlled via the weighted steering, solid suspension and superb braking action.

It glides down the road with explosive V12 power. Overtaking maneuvers aren't an issue; it is just about insane when you find a healthy opening on the road.

While it's certainly not something in which you'll ever do hot laps around your local track for fun, it does shuttle a load nicely. The massive brakes are strong and get things stopped quickly.

The interior is spectacular. It has some of the most comfortable, infinitely adjustable seats you can get.

It is a stealth bomber. Sure, it's an S Class, and there's that "Biturbo V12" badge on the side, but until you disappear into the distance, few really know about the beast that lies within.