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A recent study finds that 84 percent of Americans still use the AM/FM radio in their car, and 67 percent listen to it as their main form of audio while behind the wheel.

It may not look it, but the 2014 Mercedes-Benz CLA-Class is aerodynamic as all get out. How slippery is it? Well, the compact sedan has a drag coefficient of 0.23, which will make it the world's most aerodynamic series production car when it goes on sale in the US this September. By comparison, the most recent body up

So many sports cars, so little time. If only someone would organize them into one succinct chart, categorizing them according to common properties and laying them out in an authoritative graph. Wait, Car and Driver is someone, right?

Car and Driver 2011 10 Best – Click above for high-res image gallery

According to Car and Driver's Jens Meiners, Cadillac is poised to get a new full-size, rear-wheel drive sedan to slot in above the forthcoming XTS – a model that itself will sit above the CTS when it bows to Chris Paukert

Car and Driver takes on the LoneStar Harley Davidson edition - Click above to watch the videos after the jump

Aerodynamics. When discussing overall efficiency, sometimes it's easy to overlook just how important the shape of an automobile is in determining how fuel efficient it is. Aerodynamics is the reason that the new Honda Insight looks so similar to the Toyota Prius and it's also the reason that the production version of the Chevy Volt <

If anyone were to come along and do an updated version of Dire Straits' "Money for Nothing," the could change the background vocal from "I want my MTV" to "I want my MPG" or "I want my low Cd." Coefficient of drag, that is. Carmakers are taking every step they can, starting with aerodynamics, to give cars better gas mileage right now while they wait for more substantial technologies to come online in the near future.

Car & Driver is a common choice as bathroom reader around Autoblog HQ, though thumbing through the latest issue had us contemplating using the glossy pages for TP. C&D got its hands on Nissan's new GT-R and its development benchmark, the Porsche 911 Turbo. That's great so far, as everyone wants to know how the Nissan stacks up against its bogey. The trouble comes when a BMW M3 gets tossed into the mix. What? The M3 is a hell of a car and it clearly earns its perennial 1

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A few short years ago, getting a CD player or better yet, a multidisc changer in your car was an upgrade. Now, the little silver disc has taken up residence with cassettes as cast-off technology. Even with the cheap digital to analog converters that are in car stereos, CDs have a sound advantage over lossy data codecs like MPEG, but only us geeks seem to care that hi-hats sound like someone whisking an egg. Besides, portability and flexibility easily trumps esoteric sound quality. Truth be told,