Dear NASCAR fans, And now this year, Jimmie Johnson continues his march toward history, attempting to fend off Matt Kenseth and Kevin Harvick in Sunday's finale at Homestead-Miami Speedway. Frankly, your passion and commitment to NASCAR warrant our resolve to continuously pursue ideas that will make the best racing in the world even better. Our team at the NASCAR Research & Development Center, in concert with all of our NASCAR Sprint Cup Series race teams, is testing a number of rules packages in order to improve upon this season's on-track product for 2014 and beyond. More...