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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.

Watch Jay Leno's Garage work on a Porsche 911 and others

Jay Leno doesn't just own a bunch of cars – he restores them. (Or has people who restores them, at any rate.) For this latest video, he's showing us some of the projects he and his team are currently working on. The tour-de-garage starts with a 1953 Cunningham that had been in storage since '68, complete with a copper grille ready for plating and a 331 Hemi V8. Jay says that every one of the cars that Briggs Cunningham made is still on the road – but that's just one of the dozen or so projects Jay and company are working on. There's a suitably brown '71 Porsche 911 T in near-original condition having sat untouched parked underground in Beverly Hills for decades, and a '58 Chrysler Imperial convertible once driven by Clark Gable and Frank Sinatra, and now getting a brake upgrade. There's a Volvo 122 wagon that's been stripped down, media-blasted, and powder-coated, a thousand-horsepower Rolls-Royce, a 1960 Nash Metropolitan, a supercharged Mercedes-Benz 600 Pullman, and a 1914 Detroit Electric. And those are just the four-wheeled automobiles. Over in the two-wheeler section there's a pair of Brough Superiors, a BSA, an Indian, and a custom racing sidecar that Jay's mechanic Bernard is working on. In short, Jay Leno's Garage isn't just one where vehicles are kept – it's one where vehicles are brought back to life. Related Video: News Source: Jay Leno's Garage via YouTube Chrysler Mercedes-Benz Porsche Classics Videos Jay Lenos Garage bsa

2014 Mercedes S-Class priced lower from $92,900*

The massively overhauled 2014 Mercedes-Benz S-Class will start at $92,900, not including a $925 destination fee, when it arrives at US dealers in October. That's a 2.8-percent drop over the 2013 S-Class, although Mercedes is fast to point out that a drop in price doesn't equate with a drop in equipment for the executive sedan.
Besides an extra 20 horsepower from the 4.6-liter, biturbocharged V8, the S550 sports a standard panoramic sunroof, keyless start, a rear-view camera and LED headlights, taillights and interior lights. Adding the German manufacturer's 4Matic all-wheel-drive system bumps the S550's price up to $95,900.
If the S550 doesn't quite cut the mustard, you can wait until November, at which point Mercedes will quite happily sell you the new S63 AMG 4Matic for $139,500. Power is also up on the S63, from a max of 563 ponies with an AMG Performance Package to 577 horsepower as standard on the 2014 model.