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"This is the all-new, twin-turbo 2014 Mercedes-Benz S600, fresh from the 2014 Detroit Auto Show.  READ THIS: Mercedes-Benz GLA45 AMG revealed ahead of Detroit  Hugely popular here and in Asia, the S600 isn&amp;#039;t bought for its technology, even if the new model ushers three new hardware/software combos into the S-Class&amp;#039;s already gizmo-ridden cabin. There&amp;#039;s a head-up display, a touchpad to input data with a swipe of the finger, and a big leap in the capability of Collision Prevention Assist Plus.  In keeping with the bigger-is-better theory, the big V12 S600 won&amp;#039;t be available in short wheelbase guise. Mercedes-Benz prefers to keep the twin-turbo V12 exclusive to the 206.5-inch long wheelbase version.   There&amp;#039;s no denying the power. With the S600&amp;#039;s 523 hp and 612 lb-ft of torque, it&amp;#039;s enough to hurl the 4817-pound, four-door limousine to 62 mph in 4.6 seconds. That&amp;#039;s unseemly when the man/woman of import is usually perched in the folding rear seat, complete with an electrically adjustable footrest and a hot rock massage, which is presumably why it&amp;#039;s limited to 155 mph.  The big engine has gotten bigger, which explains its 13-hp hike. It now fully justifies the car&amp;#039;s 6.0-liter tag by growing from 5513cc to 5980cc of displacement, and it also scores a new engine management computer and twin-spark ignition. But this is the least high-tech engine you&amp;#039;ll find in an S-Class. For starters, it makes do with three valves per cylinder, and you won&amp;#039;t find direct fuel injection anywhere near it. READ THIS: Designer perspective: The 2015 Mercedes-Benz C-Class  Still, the engine offers a 21 percent improvement in fuel economy. The engine is mated to the trusty old seven-speed automatic transmission (no sign of the nine-speed unit fitted to the lesser hybrid), and the S600 only comes in rear-wheel drive.   Besides the longest wheelbase, the S600 also comes with the highest of equipment packages, including Magic Body Control, a Driver Assistance Package, and Road Surface Scanning all as standard equipment.  It also delivers a touchpad, allowing the driver and passengers to input data via finger touches on a pad, much like the unit rival Audi has offered for some time, even in its smaller models. It will function in a range of languages and writing styles, too, from Latin characters to Cyrillic and from Japanese and Chinese to Arabic. SEE PHOTOS: 2015 Mercedes-Benz SLS AMG GT Final Edition  The car&amp;#039;s turning circle is an enormous 40.3 feet, too, though that&amp;#039;s presumably the chauffeur&amp;#039;s problem, and its 21-gallon fuel tank isn&amp;#039;t going to get it too far between refills.  The core of the car is a body-in-white that has steel at its core, but aluminum is so prevalent that it makes up about 50 percent of the external body parts. The hood, trunk lid, doors, and roof are all aluminum, and Mercedes-Benz has squirted a specially-developed foam into the A-pillars to add stiffness and reduce vibrations. The safety cell itself is almost completely high- and extra high-strength steels, and it has Mercedes-Benz claiming new segment records for torsional rigidity.   Beneath that, Mercedes-Benz gives the S600 a four-link front suspension to control its 245/45 R19 front tires and a five-link rear end to govern the 275/40 R19 rears.  While the S500&amp;#039;s 28 cameras, radars, and sonars are primarily there for safety, they also lend a hand to the sedan&amp;#039;s autonomous driving abilities. SEE PHOTOS: Mercedes-Benz CLA Wagon Shooting Brake (Wagon) Spied  The tech helps the updated Driver Assistance Package to autonomously brake from speeds as low as 7km/h (which Benz safety engineers insisted on to protect children in driveways) to 200km/h for Autobahn crises. It can now autonomously come to a stop if it thinks the driver isn&amp;#039;t braking in time to get the job done.  The other end of this is the PreSafe Plus, which does essentially the same thing, but looking back from the rear bumper. It still warns other traffic of its sudden emergency stops by flashing its tail lights, but should a rear-end collision be unavoidable, the car also stands on its own brake pedal in order to try to avoid being pushed into traffic.   And there is more. Much more. There are systems to autonomously steer the car for up to 15 seconds at a time, systems to warn when move across on an unseen car, systems to warn when a faster car is approaching your blind spot, a radar cruise control that doubles as a traffic jam brake and throttle, and more.  Mercedes-Benz claims the S-Class is the first car in history without light bulbs. Not only are the head and tail lights all LED, but so is most of the internal lighting. There are around 500 LEDs in the S-Class, with 56 in each headlight alone and, if you include the rear fog light, up to 39 in the taillights. Three hundred of the things lurk around the cabin to provide ambient lighting, too.  While Mercedes-Benz has yet to talk about the interior of the S600, it can be expected to be a significant step forward from the short wheelbase S500\u2014itself no slouch in the luxury stakes, with passenger footrests, adjustable backrests in the rear, and 23 speakers in its most exorbitant version. "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.roadandtrack.com/car-shows/detroit-auto-show/news/a6637/2015-mercedes-benz-s600/>