in Grand-Am/NASCAR Daytona Doubleheader

Grand-Am Road Racing and NASCAR have announced a unique combination for July 4, when the Grand-Am Rolex Sports Car Series presented by Crown Royal Cask No. 16 and the NASCAR Sprint Cup Series will compete on the same day at Daytona International Speedway.

The Brumos Porsche 250 will take the green flag that Saturday afternoon, followed by the Coke Zero 400 Powered By Coca-Cola at 8 p.m.

Previously, the Brumos Porsche 250 was held on Thursday evening of the July 4 weekend. It will remain a one-day event, with practice and qualifying Saturday morning.

"This is a tremendous opportunity to showcase our exciting style of racing in front of more than 100,000 fans," said Grand-Am President Roger Edmondson. "Coming off the photo finish of last year's race, along with the exciting conclusion of the recent Rolex 24, non-traditional sports car fans will experience a terrific show."

Details of television coverage as well as a starting time for the race will be announced in the near future.

The heritage of the Brumos Porsche 250 dates to 1967-1983, when it started at the stroke of midnight on July 4, followed on the morning of July 4 by the NASCAR Sprint Cup Series race then known as the Firecracker 400. Grand-Am revived the event on the Thursday date as part of its inaugural 2000 season.

The Brumos Porsche 250 is the seventh of 12 events on the 2009 Rolex Series schedule, which opened with the 47th running of the Rolex 24 At Daytona on Jan. 24-25. Brumos Porsche driver David Donohue held off Juan Pablo Montoya by .167 seconds to win in the closest finish in the history of major international 24-hour motorsports events, while TRG Porsches scored a one-two sweep in the GT class. For more information, visit grand-am.com.