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

Happy 80th birthday, Dan Gurney

Here's a birthday shoutout to racing legend Dan Gurney, who turns 80 on Wednesday. In a long career, Gurney has been a driver, a car builder and a team owner. He was the first driver to win races in Formula One, Indy cars, sports cars and NASCAR.

All used up: Pre-owned sales rise as consumers seek new-car alternatives

Used-car sales took a leap upward in April, and the trend is expected to continue at least until midyear as pent-up demand for affordable pre-owned vehicles jacks up at least one segment of the car marketplace. Sales of new cars continued an unabated slide toward what analysts say is a 30-year low in the United States, but used-car sales showed strength as buyers unable to finance new cars shifted their sights to less expensive used models. As a result, retailers such as the large Penske Automotive Group reported that despite an overall decline in sales in the first three months of 2009, improving used-car sales kept them in the black.

Le Mans 24-hour race 2010: CAR's guide to the classes

This year, teams are split into two categories: Prototype and Grand Touring. The former are cars created specifically for endurance racing, the latter are homologated from road cars. Each category is then split into two further disciplines – one a higher performance grade, the other slightly lower.