Jimmie Johnson has won six of his seven Cup titles running the Chevrolet R07 engine block, which made its debut 10 years ago at Texas Motor Speedway.
Jimmie Johnson has won six of his seven Cup titles running the Chevrolet R07 engine block, which made its debut 10 years ago at Texas Motor Speedway. Rick Scuteri The Associated Press
Jimmie Johnson has won six of his seven Cup titles running the Chevrolet R07 engine block, which made its debut 10 years ago at Texas Motor Speedway. Rick Scuteri The Associated Press