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The first trailer for Top Gear's 24th season shows a hands-free drag race

In the excitement over Amazon's new motoring show, it's important to remember that there's a certain series from the BBC that's attempting to get its mojo back for a 24th season. Yes, we're talking about Top Gear. Since Chris Evans' departure earlier this year, Top Gear news has been relatively sparse, particularly as The Grand Tour and its hosts Jeremy Clarkson, James May, and Richard Hammond seized headlines. But on Christmas, watchers of the series' YouTube channel caught a glimpse of the first scene from the next season. Featuring hosts Matt LeBlanc, Chris Harris, and Rory Reid in what looks like a trio of old, dilapidated cars. We're thinking TG is running a taxi comparison. There's a London black cab and a Mercedes-Benz W210 – a favorite of European cabbies – but we aren't sure where Harris' boxy wagon fits in. Did the Volvo 850 Estate ever serve as a livery vehicle? But it's the basis for this comparison that's weird, because the hosts appear to be having a no-hands drag race. The cars veer off in different directions, traveling across what looks like a snow-covered dirt lot. We're assuming hilarity ensues. And while we don't quite know what they're hoping to accomplish, we are looking forward to watching it go down. Top Gear's 24th season doesn't have an official air date, and the video ends only with a cryptic "Coming Soon." Expect to hear more in the next few months.

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.

Mercedes C-Class coupe spied undisguised

The closer that it gets to an official unveiling, the more camouflage the Mercedes-Benz C-Class coupe is stripping off. These latest spy shots show the two-door with a largely undisguised front end, but the rear is still concealed. In general, the C-Class coupe looks quite similar to its four-door counterpart, but the two-door wears some unique parts to make it appear a little sportier. As with the previously spied example, the designers move the side mirrors to the doors, instead of the corner of the A-pillars, and there's a single-bar grille up front. Despite the camouflage, these shots give a clear view of the model's sleeker silhouette, as well. At the rear, you can also spy the narrower, wraparound taillights to replace the squarish units on the sedan. Mercedes will reportedly debut this longer, lower take on the C-Class model line at the Frankfurt Motor Show in September, and sales in Europe will reportedly begin in December. This isn't the last variant to come along, though. Spy shots already show an AMG version of the coupe and a convertible under development. Related Video: