Darlington Raceway - Day 1

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Mark Martin, driver of the Aaron's Dream Machine Toyota, sits in his... News PhotoCar,Darlington - South Carolina,Darlington Raceway,Driver,Horizontal,Mark Martin,Practicing,Sitting,Sport,Sprint Cup Series,Toyota,USAPhotographer Collection: Getty Images Sport 2013 Getty ImagesDARLINGTON, SC - MAY 10: Mark Martin, driver of the #55 Aaron's Dream Machine Toyota, sits in his car during practice for the NASCAR Sprint Cup Series Bojangles' Southern 500 at Darlington Raceway on May 10, 2013 in Darlington, South Carolina. (Photo by Streeter Lecka/Getty Images)