TOPEKA, Kan. (April 22, 2010) €“ Sports Car Club of America announced today that Registration for the 2010 Tire Rack SCCA Solo National Championships has opened at www.scca.com.Expecting some 1,200 entries, the Tire Rack Solo Nationals represent the largest competition event in the world. The 38th annual event will be held Sept. 7-10 at the Lincoln Airpark, in Lincoln, Neb.The early bird registration fee of $150 is in effect until Aug. 11. Afterward, the fee increases to $300. Drivers not participating in a Tour or Divisional event will be subject to an additional $180 waiver fee. Further information, including the event supplemental regulations, is available at www.scca.com/solonats. In addition to the event registration, Test N Tune registration is also open. Information and a schedule for the Test N Tune course are available on the Nationals event page.-30-