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Rare Isdera Imperator 108i flexes its considerable muscles

The Isdera Imperator 108i is a remarkably rare supercar from the late 80s and early 90s. Born of a Mercedes-Benz concept car, it's powered by a range of AMG-developed V8s, with five to six liters of displacement, depending on the engine. The example shown here, lapping the legendary Spa-Francorchamps circuit, features the most potent 6.0-liter V8 available. And rather than just being driven about on a perfectly clean racing line, it's freaking power sliding!
Yes, there's something eternally childlike about a wedge-shaped supercar from our formative years being flung about a Belgian racetrack. Adding to the appeal is the Imperator's stumpy, periscopic rear mirror, sticking out of the roof. Even after being out of production for 20 years, this is still a wild, wild car and we'd happily snap up the opportunity pilot one of the 36 Isderas that were built. Take a look below for the full video from Spa.

2016 Mercedes C-Class Coupe offers S-Class style on a budget

This is the new Mercedes-Benz C-Class Coupe and it's the new best-looking vehicle in the small, luxury, sport coupe market. Bold praise, you say? Well, check out the live photos up top and let us know if you still disagree. As previously mentioned, the C-Class Coupe uses the same tactic as its four-door brother, aping the look of the flagship S-Class, but on a smaller, far more affordable scale. That means the same bold but sophisticated front fascia, slim, horizontally oriented taillights, and strong character line as the S-Class Coupe. It's a similar deal in the cabin, where Mercedes stuck with the aluminum and leather-heavy styling of the S-Class. It's a handsome cockpit for sure, complete with a meaty, flat-bottomed steering wheel and prominent display atop the dash. Although like its big brother, those backseats are there more for show than anything else, thanks to that plunging, fastback-like roofline. Expect the engine options on the C-Class Coupe to mirror those on the four-door sedan, with a base 2.0-liter, turbocharged four-cylinder, a twin-turbocharged V6, and eventually, a range-topping, fire-breathing C63 AMG. You can guess which one we're most eager to drive. Rear-wheel drive should be standard, although expect Mercedes' popular 4Matic all-wheel-drive system to be a popular option. Seven-speed automatic transmissions should be the order of the day, while the C63 will get some incarnation of the brand's AMG Speedshift line. As we suggested at the beginning of this story, you should check out our full gallery of photos direct from the floor of the 2015 Frankfurt Motor Show.

Mercedes F1 to use Qualcomm 5 GHz WiFi for its tire data

In Formula 1 you need more of everything. More speed, more grip, more hospitality, more money. And you need data, reams and reams of data. The Mercedes-AMG Formula 1 team – the guys with the silver cars driven by 2015 F1 champion Lewis Hamilton and his teammate Nico Rosberg – need so much information that they've teamed with Qualcomm to wirelessly upload thermal imaging data of its tires. During a typical race weekend Mercedes's two racecars will generate approximately half a terabyte of data. Live telemetry has been a feature of Formula 1 for 20 years, though there are more restrictions on it than in the past. (In the days leading up to last weekend's United States Grand Prix in Texas, Formula 1 major domo Bernie Ecclestone said that F1 needs to cease being an engineering war and return more responsibility to the drivers.) Nevertheless, F1 teams gather vast amounts of data during a race weekend, particularly in practice sessions during which restrictions on what they can upload from cars – from engine/power unit parameters to aerodynamic loads – are less prohibitive. For example, during a typical race weekend Mercedes's two racecars will generate approximately half a terabyte of data. Mercedes F1 technical director Paddy Lowe points out that the standard telemetry system simply doesn't have the bandwidth to handle the thermal tire imaging data that the onboard thermal cameras generate. Why do you want a thermal video of the tires? Because it tells the engineers and drivers precisely how much temperature there is across the surface of a tire during a lap, in corners and on the straights. It also indicates how quickly the tires come up to temperature and when they potentially overheat. Understanding the temperature variations allows the team to set the cars up optimally for grip and tire life during a stint. Qualcomm's system works with the race cars like this: Each car has forward- and rear-facing cameras in a winglet mounted on the left side of the engine intake behind the driver's head, which continuously record thermal images of the tires. As a Mercedes enters the pit lane, it passes a Qualcomm 802.11ac WiFi receiver to which it uploads the thermal data. As the car nears the garage, another receiver takes over the upload. Several Qualcomm Snapdragon 805 processors crunch the raw data as it uploads. The data is encrypted – there are always prying eyes in Formula 1.