Peace Sports Gs-810/824 (50cc) Alluminum Muffler Diameter 4.45", Length: 14.5" on 2040-parts.com

2009’s 10 most fuel-efficient cars in America: The AutoWeek list

Toyota Prius Hybrid 46 mpg combined Base price: $22,720 Our take: The perennial mpg all-star takes the crown again for 2009. Honda Civic Hybrid 42 mpg combined Base price: $24,320 Our take: Another top contender in reliability and fuel economy, the Honda Civic Hybrid is a smart choice. Smart Fortwo Coupe 36 mpg combined Base price: $12,635 Our take: This funky coupe is the least expensive on our list, proving you can be green without spending it.

Lamborghini Aventador Roadster takes to the air(strip)

Lamborghini kicked off its 10-day Aventador LP700-4 Roadster media launch and dealer-education program on Monday, and it started off with a bang. Actually, with a roar. Five new Lamborghini Aventador LP700-4 Roadsters took to the south runway of one of the busiest United States airports for a photo shoot, some video and some fun.

AutoWeek's Keith Crain receives Mercedes Star Driver award

AutoWeek editor-in-chief Keith Crain recently received the Star Driver award from Mercedes-Benz, an honor that recognizes an individual who has made great contributions to motorsports and the automobile industry. Crain, shown at left with Geoff Day, director of communications at Mercedes-Benz USA, is the sixth recipient of the Star Driver honor. He joins the ranks of Sir Stirling Moss, John Fitch, Jochen Mass, Jesse Alexander and AutoWeek senior contributing editor Denise McCluggage.