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A closer look at the 2015 BMW M3 sedan and M4 coupe: Turbocharged performance is gonna cost you

By the time the 2015 BMW M3 sedan and M4 coupe were revealed at the Detroit auto show, we already knew a lot about what to expect from the Roundel's newest generation of high-performance driving machines. It was no secret, for example, that the new M3 sedan and its two-door counterpart, the M4, will be down two cylinders and a few hundred pounds from their predecessors. Now that we've had a chance to get a look at the cars in production trim, here's a closer look at what's under all the aggressively vented fascias, spoilers and M badges.

2012 Mercedes SL63 AMG – now it’s the video

Mercedes SL63 AMG Video The official public debut of the 2012 Mercedes SL63 AMG is at Geneva next week and Mercedes has divvied up a video to pique interest. It’s easy to think of the Mercedes SL as an old man’s convertible; a soft and soggy soft-top for those who are more interested in the pose than the drive. But that’s not really been true for a long time, and certainly not in the SL AMG models, which have offered real performance and decent dynamics since arriving as the SL55 AMG a decade ago.

Video: Tesla Model S Alpha undergoes on-track testing

The electric-car wizards at Tesla have released a sneak peek of the upcoming Tesla Model S Alpha undergoing on-track drive testing. The video provides a quick glimpse of three eerily quiet sedans, but not much more. Scintillating it's not, but it's nice to see the Model S Alpha sedan getting closer to production.