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Mercedes-Benz Concept IAA is a modern silver aero

While we English-speaking folk call it the Frankfurt Motor Show, our German friends call this week's bi-annual confab the Internationale Automobil-Ausstellung, or IAA. At first glance, then, you might think Mercedes-Benz named its Frankfurt concept, the Concept IAA, after the show it'd debut at. But, the Concept IAA isn't named for the show. It's actually an abbreviation for Intelligent Aerodynamic Automobile, and it's very aerodynamic indeed. This four-door coupe can transform, while moving, from its sedan-like design mode to an ultra-sleek, gas-powered fish of a car. This aerodynamic mode has a drag coefficent of just 0.19. That's sleeker than a Tesla Model S, and it ties the rating of the General Motors EV1 electric car. In fact, it's very nearly as aerodynamic as the Volkswagen XL1. The IAA can transform automatically at 80 kilometers per hour (about 50 miles per hour) or via the press of a button. When it enters an aerodynamic mode, eight segments at the back of the car extend out, adding over 15 inches to the overall vehicle length, effectively extending its already tear-dropped-shaped tail. And that's just the most visible aero aid. At the front of the car, flaps in the bumper extend out nearly an inch, while there's a smaller extender in the back bumper. These serve to keep air away from the wheel arches, where turbulence can become an issue. Of course, Mercedes has thought of this, too, fitting "Active Rims" that "alter their cupping from 55 mm to zero," whatever that means. There's even an active aero aid inside the front bumper, where a louver extends backward by 2.3 inches to smooth out the air traveling underneath the car. Outside of its super-slippery mode, the IAA is a relatively handsome four-door coupe, featuring the kind of plunging roofline that wouldn't look out of place on the company's pioneering CLS-Class. The interior is certainly worthy of the CLS, too. It's home to gorgeous white leather and touch-based controls, and in general, looks very luxurious. Mercedes' dogged pursuit of aerodynamics does not mean that the Concept IAA is some gutless ecomobile. Under the skin is a gas-powered, plug-in hybrid system that produces up to 279 horsepower and allows the sleek sedan to hit 155 mph. Its all-electric range is based, of course, on what mode its body is in. It's most impressive in aero mode, where it will cover 41 miles on a single charge. Switch over to design mode, and that figure drops slightly to 38.5 miles.

Weekly Recap: Toyota propels hydrogen fuel cells

Toyota is serious about hydrogen fuel cells, and it wants the auto industry to follow suit. The Japanese automaker said this week it's releasing 5,680 fuel cell patents from around the world, including technologies used on its upcoming sedan, the 2016 Mirai. The move is unusual, but not unprecedented, as Tesla similarly released its electric vehicle patents last year. The idea for Tesla, and now for Toyota, is to spur development of alternative propulsion. "By eliminating traditional corporate boundaries, we can speed the development of new technologies and move into the future of mobility more quickly, effectively and economically," said Bob Carter, Toyota Motor Sales senior vice president of automotive operations, in a statement. Toyota's fuel cell patents will be free to use through 2020, though patents related to producing and selling hydrogen will remain open forever. Toyota said it would like companies that use its patents to share their own hydrogen patents, but won't require it. "What Toyota's doing is really a logical move, and really a good move for the industry," Devin Lindsay, principal powertrain analyst with IHS Automotive, told Autoblog. The announcement was made at the Consumer Electronics Show in Las Vegas. It comes as Toyota prepares to launch the hydrogen-powered Mirai in a limited number late this year in California. The launch will be extended to the Northeastern United States next year. Toyota also has announced plans to support networks of fueling stations in each region to try to smooth consumer adoption. The Mirai has a 300-mile range on a tank of hydrogen, and it takes about five minutes to refill. Fuel cells have been receiving increased attention recently, and Audi and Volkswagen debuted hydrogen-powered cars at the 2014 Los Angeles Auto Show. Honda, another proponent of the technology, also showed its updated FCV concept in November in Japan. The company, however, has delayed its fuel cell sedan a year until 2016. Like Toyota, Honda says its hydrogen-powered car will have a range of 300 miles or more. Meanwhile, Hyundai currently offers leases for fuel-cell powered Tucsons, which have a 265-mile range, in Southern California. Despite the optimism some automakers have for fuel cells, the technology still faces barriers. A lack of filling stations has long held it back, and many consumers are not familiar with the potential benefits.

The Scaldarsi Emperor I is a Mercedes-Maybach S600 taken to 11 on the bad-taste scale

The custom car world is filled with vehicles designed by people that don't know when to quit. The Scaldarsi Emperor I, shown here in all its awful rose-gold glory, appears to have been designed by an enthusiast of the KFC Double Down. It's a hideous creation and we can't let it pass without saying so. We also can't look away. Scaldarsi's so-called "artists" have thoroughly reworked what was a perfectly wonderful Mercedes-Maybach S600. In addition to the 24-karat rose gold accents, the company has crafted a new front fascia and modified the side and rear treatments. Inside, the general S600 shape remains, but new leather and wood cover nearly every surface. Your insane imagination will not be tamed, as there are 24 colors for the leather, 24 types of animal hides, 78 types of wood, and 16 exterior body colors available. The result, at least in the publicity shots, is a mix of awkward textures and seats that look like a pile of colorful marshmallows. Those interested in purchasing an Emperor I can option custom-engraved champagne glasses, matching tote bags, and even an Emperor Edition Rolex watch. If the standard key fob is too common for your taste, they'll make you one custom. Watch out for that Scaldarsi logo, though – it looks mean enough to rip through your pocket and take a chunk out of your leg. We will give Scaldarsi credit for wisely letting Brabus handle the power. The Emperor I uses the 6.3-liter twin-turbocharged V12 from the Brabus Rocket 900. This 888-horsepower monster is a tuned version of the V12 AMG uses in the S65, SL65, and G65. The Emperor I has an estimated 0-60 mph time of just 3.7 seconds, which is quick enough to leave stoplights before anyone recognizes you behind the wheel. Scaldarsi is asking a mere $1.5 million for each of 10 examples being created. If you miss out on the Emperor I or are some kind of twisted completist that needs one of each, this just the first in a series of customs the company will offer. Next up is the Emperor II (a Mercedes-AMG S65 Coupe), which will be followed by the Emperor III (Bentley Bentayga), Emperor IV (Mercedes-AMG G65), and Emperor V (Bugatti Chiron). Lord help us all. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. Related Video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.