NASCAR teams, drivers and sponsors have donated rare, collectible memorabilia for an auction to raise money for Hurricane Katrina relief efforts. The initial items were posted on Overstock.com Auctions with a September 26 ending date, with more auctions anticipated in the coming weeks as donations continue to pour in.

Race Day Charities, founded by Rob D'Amico and Michele Rahal of Fox Sports Radio's internationally syndicated morning show "Race Day," is hosting the 10-day auction and will donate all of the proceeds to the American Red Cross and Salvation Army.

Donations came in from champion race car drivers Greg Biffle, Mark Martin, Tony Pedregon and Martin Truex Jr. and rock bands, Nickelback, who recently performed at the Richmond International Raceway, and 3 Doors Down, who were born, raised and live in the hurricane-stricken region of Southern Mississippi. Every item is autographed, and most were actually used by their famous owners.

The NASCAR memorabilia expected to garner the most attention are a racing suit worn by 2002 Busch Grand National Series Champion Greg Biffle in a winning race and a Pennzoil commemorative racing jacket autographed by the legendary Mark Martin, both of whom are currently in the Chase for the NEXTEL Championship.

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