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Mercedes celebrates with World Championship edition SL63

Mercedes has plenty to be celebrating at the moment, having just won the Formula One World Championship in spectacular style – taking the constructors' title by a huge margin and the top two slots in the drivers' standings as well. It almost goes without saying that the German outfit would celebrate with a special edition, and that's just what we're looking at here. Presented at a special celebratory Stars & Cars event in Stuttgart in front of 50,000 jubilant fans, the Mercedes-Benz SL63 AMG World Championship 2014 Collector's Edition is based on Benz's twin-turbo V8-powered roadster but with some choice upgrades. Two versions will be offered: one in black with gold accents (displayed with the Silverstone circuit layout), the other in white with silver accents (and the Hockenheim map). One was designed by Lewis Hamilton, the other by Nico Rosberg. We'll let you sort out which one was done by which, but either way there'll only be 19 examples, each dedicated to a different grand prix circuit in the championship which Mercedes positively dominated – winning all but three, scoring eleven one-two finishes and landing on the podium at each and every one.

Comparison test: 2019 Acura RDX vs. compact luxury SUV competitors

Truth be told, if we were to compare the all-new 2019 Acura RDX with those compact luxury crossover SUVs it would most likely be cross-shopped against, you'd be looking at a different list. Even Acura admits that Lexus and Infiniti are the most likely bogies, but with the 2019 RDX, Honda's luxury brand is attempting to attract those customers who think as much with their hearts as with their heads. And for the most part, those folks have been buying from German brands: the Audi Q5, BMW X3 and Mercedes-Benz GLC-Class. So, to show how the new RDX compares to them, Acura actually provided examples of each during the recent press drive along with a Volvo XC60. All were determined to have greater emotional appeal than the last RDX, and we would certainly agree. For, as much as the previous-generation RDX made sense on paper, it was really hard to get excited about it. And when you're paying extra for a luxury vehicle, shouldn't you get a little excited? Well, as luck would have it, Consumer Editor Jeremy Korzeniewski and I were on hand in Whistler, British Columbia, for the press launch. We didn't have an abundance of time in each RDX competitor, but in conjunction with our usual comparison chart, our impressions should provide a good first taste of how the new RDX compares. Performance and fuel economy Contributing Editor James Riswick: On paper at least, the RDX is gutsier than its comparably powered European rivals. It also weighs the same or less, which logically should mean it'll be the quickest in a straight line. During my brief drives, though, I'm not sure it really stood taller than the three Germans. It at least matches them for smoothness, which is something that can't be said about the Volvo. Fuel economy is lower than them all when you consider all but the Mercedes come standard with all-wheel drive. It's also worth noting that all the competitors are available with engine upgrades, and unless Acura's forthcoming resurrection of Type S models includes the RDX, it should stay that way. Consumer Editor Jeremy Korzeniewski: Line 'em all up in a drag race, and I have a feeling the Acura would squirt away to victory. A good bit of that, though, would be due to its 10-speed automatic transmission, which offers a huge spread of ratios and fires off extremely quick shifts. In the real world, I'd guess fuel economy will be similar across the board, so I'm willing to call that category a draw.

Mercedes-AMG GT and C63 to serve as F1 safety, medical cars

Mercedes has spent nearly 20 years providing the safety and medical cars for Formula 1, so it was hardly a shock when the company announced that the new Mercedes-AMG GT and C63 AMG S Estate would serve as ushers in the F1 circus. The two turbocharged monsters replace the old SLS AMG safety car and C63 AMG wagon medical car, which have served in one trim or another since 2010 and 2008, respectively. The biggest change for either car is, of course, the lightbar. It's been mounted atop a carbon-fiber hoop on the AMG GT that Mercedes says optimizes airflow to that big rear wing. Meanwhile, the location of the lights was confirmed via wind tunnel testing. In the cockpit, two iPads allow the AMG GT's passenger, fuel analyst Peter Tibbetts, to monitor the race's world feed while also keeping an eye on race data. The tablets stay connected via an in-car, wireless internet connection. Changes for the C63 S wagon are less extensive. It gets a lightbar and the usual signaling systems in the headlights and taillights, while the cargo compartment includes both a respirator and a defibrillator, to manage more serious medical emergencies. As with the AMG GT, the C63 is finished in F1's traditional silver safety/medical car livery. Beyond these changes, both vehicles are just as potent as those that can be purchased at dealers. Both cars feature a 4.0-liter, 510-horsepower, twin-turbocharged V8, while a seven-speed AMG Speedshift transmission dispatches the grunt with lightning-quick shifts. So equipped, the AMG GT will hit 60 in 3.8 seconds and the C63 can get there in 4.1 seconds. Check out the full gallery of both cars, decked out in their F1 liveries, available up top. Related Video: Mercedes-AMG GT S and C 63 S in action for the 2015 Formula 1® season: Maximum safety, maximum performance Affalterbach, Mar 06, 2015 Baptism of fire on the race track: The GT S and the C 63 S – the new high-performance cars from Mercedes-AMG - provide for maximum safety in the 2015 FIA Formula One World Championship™. At the first Grand Prix in Melbourne, Australia (12 to 15 March 2015) the GT S will debut on the race track as the Official Safety Car of the FIA Formula One World Championship™. As the Official Medical Car of the FIA Formula One World Championship™, the C 63 S Estate will be on hand to provide fast emergency medical care. Mercedes-AMG has been active continuously at the pinnacle of motorsport since 1996.