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Mercedes CLA45 AMG Racing is ready for a spot on the grid

Mercedes-Benz trotted out its CLA45 AMG-based racer at the 2013 Frankfurt Motor Show. We first showed you the sedan in the deluge of news and reveals that precedes most good auto shows, and were blown away by the car, formally known as the CLA45 AMG Racing Series.
We were strolling by the Mercedes stand, and figured we'd pop in and take a look at the new racer and its carbon-fiber body panels, gutted interior, and race-sourced aero parts. It's a looker, both as a road car and a track weapon. It's not clear what series the CLA45 AMG will qualify for, although it does seem like a shoe-in for the World Touring Car Championship. Let us know what you think of the CLA racer down in the comments. In the meantime, we've got a full gallery of live images up top, along with the stock images that were posted last week on the Mercedes-Benz Facebook page.

AMG could have a hybrid model on sale by 2020

European CO2 regulations are driving every carmaker to previously unthinkable solutions in order to reduce emissions. And so far those unthinkable solutions, like a turbocharged Ferrari, have been pretty good. AMG has its development eye on the year 2021, when EU regulations will include every car sold by Mercedes-Benz parent company Daimler when calculating fleet average emissions, and says that the deadline could mean a hybrid AMG by 2020. Those are the words of the company's R&D boss, Thomas Weber, to Autocar. Weber says a hybrid system right now wouldn't work only because AMG customers "wouldn't buy it." In five years, though, not only will the pressure have forced the situation, but the low-six-figure segment might also be populated by heresies like a diesel and hybrid Bentleys, and a hybrid or electric Porsche 911, to break the ice. Acceptance is coming down from the top via supercars like the McLaren P1 and Porsche 918, and up from the bottom with the near-term incorporation of electric turbos and e-boost systems. And whenever the German challengers to Tesla arrive, that will be another huge step to changing the public's mind. E-boost is what Weber said the division is looking at right now, perhaps like the kind in Mercedes' Bluetec Hybrid that employs an innocuous battery and motor. Regenerative braking would keep the battery charged. Weber said he likes it because it's proven, it's light, it's cheap, and it's already used in high-volume applications. But we would not be surprised to see a more robust implementation by the time 2020 gets here.

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.