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Mercedes spotted testing new S-Class cabrio in the snow

A fullsize luxury convertible is a rare species. There's the Bentley Continental GTC, maybe the Aston Martin DB9 or Vanquish Volante and the Maserati GranTurismo Convertible if you won't need those rear seats too often, but that's about it. The segment seems to be expanding, though, with the imminent arrival of the drop-head version of the Rolls-Royce Wraith and the new challenger you see here. Spied undergoing winter testing in Sweden, this prototype for the upcoming Mercedes-Benz S-Class Cabriolet is wearing barely any camouflage or body cladding whatsoever. In all likelihood that's largely because it's essentially the S-Class Coupe we already know, but with a folding fabric roof: Mercedes typically keeps the origami tin-tops to two-seaters like the SL and SLK. When the new S-Class cabrio is ready to launch – probably sometime between now and the summer – it'll join an expanding array of convertible Benzes that already includes the aforementioned SL and SLK and the E-Class Cabriolet, and will soon adopt the AMG GT roadster as well. Featured Gallery 2017 Mercedes-Benz S-Class Cabriolet: Spy Shots View 12 Photos Image Credit: CarPix Spy Photos Mercedes-Benz Convertible Luxury mercedes s-class cabriolet

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.

Why it's difficult to accurately test the efficiency of a plug-in car

When it comes to electric vehicles and plug-ins in general, the Environmental Protection Agency-certified range is a hugely important number. While actual range anxiety is largely psychological, the magic number does provide a point of comparison of buyers considering one EV over another. The driving distance is also often touted by automakers when marketing their models. Unfortunately, as Green Car Reports finds in a recent deep dive, the way the EPA calculates the figure is a convoluted mess, and discovering the reasons why is definitely worth the read. The issue isn't about bad science but instead comes down to vague wording. The EPA's accepted range test is sourced from an evaluation called J-1634 from the Society of Automotive Engineers, and it seems to provide balanced results for vehicles that automatically reach a single state of charge when plugged in. However for models with multiple charge settings, the situation gets complicated very quickly. Of course, these modes are often created in the software, meaning that a car's certified driving distance can change with just a few taps of the keyboard without the real world results owners might experience actually changing. By showing the test's effects on the certified range for the Tesla Model S, Nissan Leaf and Mercedes-Benz B-Class Electric Drive over the last few years, Green Car Reports makes a compelling argument that it's the evaluation that needs to change. Thankfully, it appears that the solution is a very simple one. Get the details here.