Circle K, one of the most widely recognized convenience store brands in America, and NOS Energy Drink have signed as title sponsors for the Circle K NOS Energy Outlaw Showdown at The Dirt Track at Charlotte on May 28.

“Circle K has been a steadfast supporter of The Dirt Track for many years,” said Seamus Curley, director of events at Charlotte Motor Speedway. “We are thrilled to have Circle K and NOS Energy on board to sponsor a tremendous 2010 season opener at The Dirt Track at Charlotte.”

Circle K has been one of North America’s most popular and successful operators of convenience stores for more than 50 years. Its stores are known around the world for offering busy consumers a wide variety of quality products and services in a fast, friendly and clean environment.

NOS Energy Drink was launched in 2005 and it fuels victory by providing the ultimate in human horsepower. NOS is blended with Taurine, L-Carnitine, Inositol, Ginseng and B-Vitamins to maximize performance. Whether on the track, tuning a favorite car in the garage, or getting into gear for an upcoming competition, NOS delivers a serious boost to competitors and fans alike.

“NOS fuels victory in every sport with four wheels and a tailpipe, including winged sprint car racing,” said Tutul Rahman, NOS brand director. “We’re excited to sponsor the World of Outlaws in its return to Charlotte, the Mecca of Motorsports, and we look forward to seeing some NOS-some performances.”

The stars of the World of Outlaws Sprint Car Series return to The Dirt Track at Charlotte as part of Coca-Cola 600 Race Week for the Circle K NOS Energy Outlaw Showdown on May 28. The winged, 800-horsepower, open-wheel, sprint cars will take to the four-tenths-mile clay oval to compete for a trip to Victory Lane at The Dirt Track and $12,000-to-win.

Sprint car legend Steve Kinser, four-time World of Outlaws Series champion Donny Schatz and last year’s Showdown winner, Joey Saldana, are expected to be among drivers competing for the top prize.

In addition to sprint car racing, the FASTRAK Crate Late Model Series will battle it out in the FASTRAK Triple Crown scheduled to follow the night’s main event.

Gates will open at 4:30 p.m. and drivers will participate in an autograph session from 4:30 – 5:30 p.m. on the main concourse. The first 1,000 fans to present a NOS Energy Drink from Circle K at the gate for the autograph party will receive a free limited-edition commemorative poster. Opening ceremonies begin at 7:15 p.m. with the Circle K NOS Energy Outlaw Showdown scheduled to start at 9:05 p.m.

The Dirt Track features stadium-style seating along the frontstretch and all events are family priced. Reserved seats to the Circle K NOS Energy Outlaw Showdown are just $25 for adults and $10 for children 12 and under. Tickets can be obtained by calling the Charlotte Motor Speedway ticket office at 1-800-455 FANS or online.

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