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The 500-hp club: The room is getting crowded

At a time when fuel economy counts for just about everything, there's still a horsepower war raging in the United States. The number of fire-breathing wedge-shaped supercars and hot sedans and coupes that can pump out 500 hp or better has nearly doubled in the past five years to more than 70. A decade ago there were just two members of the 500 hp club in the United States: the Ferrari 575M and Lamborghini Murcielago.

McLaren X-1 - rebodied MP4-12C supercar (2012)

Sometimes, the best just isn’t good enough. That’s why a wealthy anonymous car collector – garage already full of McLaren F1, McLaren Mercedes SLR and MP4-12C, and goodness knows how many fabulous non-McLarens – thought he’d like to produce his very own one-off supercar. The new McLaren X-1, which makes its debut at The Quail, part of the Pebble Beach weekend, is the result.

Detroit 3 set pace as March sales advance

UPDATED-U.S. light-vehicle sales -- led by strong pickup and crossover demand at Detroit's automakers -- rose 3 percent to 1.45 million units last month, slightly below forecasts but a positive signal the spring selling season is off to a solid start. It was the industry's best month since 1.48 million light vehicles were sold in August 2007.