Arias Pistons 12.5:1 Compression 82mm Bore Honda B-series on 2040-parts.com

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.

Quaker State offers cash reward for reaching 300,000 miles with its oil

If you're thinking of driving your car to the 300,000-mile mark, the maker of Quaker State oil will pay you as much as $3,000--as long as you use its oil. The oil brand on Monday launched the Quaker State Cash Back Program as part of its updated limited-warranty program. According to the company, the warranty is one of the first of its kind that follows the vehicle makers' recommendation for oil changes instead of its own.

Ford tests electric-vehicle sounds on Facebook

Sure, if it were up to us, every car would sound like a Lamborghini Aventador or a McLaren Formula One race car. And while those specific options aren't available (yet),Ford is using its Facebook page to let fans vote on sounds to be made by the electric Focus. Since EVs are so quiet, Ford needs to give the Focus electric some sound for safety's sake--to draw the attention of people who are blind people, those using cell phones or iPods and even for animals.