"The S-Class has established itself, over the years, as the model in which some of the latest technology makes its production-vehicle introduction. This latest car continues that tradition with several trick new features. The first is DISTRONIC PLUS, a new "proximity control system" that uses the radar sensors and can maintain a set following distance behind vehicles ahead, all the way down to a stop; it can also operate at speeds up to 120 mph. If the system brings the car to a stop, it can reaccelerate the car back to the set speed and distance once traffic starts moving again.

High-end luxury-car sound systems have gone from often underwhelming to often mind-blowing in the course of the past decade. The S-Class's new top system is among the best we've ever heard when you crank it up, not in terms of bass-boom but for sounding robust and full. With 600 watts, 13 channels, and 14 speakers, the Harmon/Kardon system is DVD-Audio and MP3 compatible and can also interface with iPods. Although exact standard-equipment specification of U.S.-bound cars hasn't been detailed yet, U.S. cars will have an in-dash, six-disc changer and memory-card slot standard.

A new high-performance AMG version of the new S-Class won't be arriving for another year or more. In the mean time, there's an AMG Sport Package available from the start; it brings full AMG bodywork combined with flashy 19-inch five-spoke alloy wheels. AMG wheel packages will be available separately, with sterling silver options and for tire sizes up to 275/35R20 in the back.

If it's more of a custom look than serious high performance that's wanted, the S-Class will be offered in two very distinctive special editions from designo, one combining pastel yellow leather with gloss black piano lacquer and anthracite Alcantara lining; the other bringing in Armagnac leather upholstery and maple-grain wood.

While the rear-wheel-drive version of the S600 will continue to feature the five-speed automatic transmission, we were told that 4Matic S600s will get a revised version of the new seven-speed. Expect starting prices across the board to go up slightly (which is a few grand when we're dealing with this high price class) - meaning the high $70k range for the S450, the high $80k range for the S550, and around $130k for the S600. There will also likely be various limousine and armored versions to follow.

If there's a single point worth emphasizing after a first drive in the new S-Class, it's that Mercedes-Benz is serious about maintaining its "king of the road" status, and for those who've arrived but prefer to drive themselves, we can safely say that no-nonsense high-end luxury has never been better.

2007 Mercedes-Benz S550
Base price: est. $88,000
Engine: 5.5-liter V-8, 382 hp/391 lb-ft
Drivetrain: Seven-speed automatic transmission, rear-wheel drive." TheCarConnection.com Exclusive