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

May sales slide 4 percent on rising fuel prices, tight vehicle supplies

U.S. light vehicle sales dropped 4 percent in May--the first decline since August--as rising gas prices, inventory shortages, higher stickers and economic jitters curbed demand. The pace of sales last month--11.78 million units on an annualized basis--was the year's lowest and marked the first seasonally adjusted total below 12 million units in seven months.

Porsche shows off 911 RSR for World Endurance Championship

Porsche is celebrating the 50th anniversary of the 911 this year with several events including the Retro Classics show in Stuttgart, Germany, an exhibit at the Porsche Museum and honored marque status at the Pebble Beach Concours d'Elegance. Porsche also went racing with the new 911 RSR in the first event of the World Endurance Championship this weekend, and has posted a clip on its YouTube channel. The 991-based Porsche 911 RSR houses a 4.0-liter flat-six making 460 hp with a new six-speed sequential transmission with paddle shifters.

Citroen Survolt hits Le Mans +video

The Citroen Survolt goes to the Le Mans Classic Citroen has been producing some pretty interesting concepts recently, and one of the more recent is the Citroen Survolt we saw at the Geneva Motor Show earlier this year. At the time of the reveal we heard through the grapevine that Citroen intended actually building the electric Survolt and staging a one make racing series. Yeah, right we thought.