Martin Truex, Jr. took part in the Goodyear Tire Test featuring the Gen-6 race car in Darlington Tuesday . Carl Edwards, Denny Hamlin, Paul Menard and Juan Pablo Montoya were also at Darlington for the daylong session. NASCAR teams have previously tested the car at Daytona International Speedway and Charlotte Motorspeedway. TIM DOMINICK — tdominick@thestate.com Buy Photo