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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.

The BMW M8 leads this month's list of discounts

Back in June of this year, the BMW 8 Series was the most heavily discounted vehicle in America. This month, it's the 617-horsepower M8. Midsummer buyers of the 2020 BMW M8, which is offered in hardtop, convertible and four-door Gran Coupe bodystyles, were seeing an average of $6,150 cut off the sticker; this month that figure has ballooned all the way to $16,864. That's more than 11% off the car's $150,000-plus retail price, and, according to data provided by TrueCar, it's the largest dollar amount sliced off the retail price of any car for the month of September. Next is the Maserati Quattroporte, buyers of which are saving $15,912 for an average transaction price of $99,763. If that's still too expensive, the smaller Ghibli's $70,030 average transaction price represents a huge 14.5% discount, earning the Italian sedan entry into our monthly top 10 best deals list.  The third largest monetary discount in September comes off the $131,066 sticker price of the lovely 2019 Mercedes-AMG GT. Take $15,473 off that sum for an average transaction price of $115,593. For a look at the best new car deals in America based on the percentage discount off their suggested asking prices, check out our monthly recap here. And when you're ready to buy, click here for the Autoblog Smart Buy program, which brings you a hassle-free buying experience with over 9,000 Certified Dealers nationwide. BMW Maserati Mercedes-Benz Car Buying Coupe Luxury Performance Sedan consumer best deals biggest discount

Bahrain Grand Prix proves that Formula 1 finally has parity

Ferrari driver Sebastian Vettel claimed victory at the Bahrain Grand Prix 6.6 seconds in front of Mercedes-AMG's Lewis Hamilton. In so doing, Vettel vaulted into first place in the driver standings ahead of Hamilton, with two race victories to the Mercedes driver's one. The decisive moment in the race came with 16 laps remaining, as Hamilton served a 5-second penalty for holding up Red Bull's Daniel Ricciardo in the pit lane in an earlier pit stop during a safety car period. Hamilton was able to reclaim second place in front of teammate Valtteri Bottas with 10 laps remaining, and he cut Vettel's lead from 13 seconds to 6.6 seconds at the finish. Bottas went on to finish third, followed by Ferrari's Kimi Raikkonen in fourth. Ricciardo crossed the line in fifth, meaning there were three constructors in the top five places in Bahrain. Perhaps more than anything else, the 2017 season has been unpredictable and entertaining, marking a break from the last several years in F1 where one marque has been dominant. Here's hoping the rest of the year provides similar thrills and spectacle. Related Video: Image Credit: Lars Baron/Getty Motorsports Ferrari Mercedes-Benz Racing Vehicles F1 Lewis Hamilton Sebastian Vettel