NASCAR continues to work on improving its on-track product, an endeavor chairman Brian France takes so seriously he plans to attend Monday's test at Charlotte Motor Speedway. The test at Charlotte will be the second as NASCAR continues to seek a rules package that could enhance the competition. ''Obviously, we want to get more lead changes, we want to get closer, tighter competition,'' France said Thursday in a briefing with reporters. Safety is in there in a high place, acceptance, all kinds of things.'' Once that Charlotte test is complete and NASCAR has a better grasp of its 2014 rules, the focus could be turned to other areas of the product: France hinted Thursday there could a larger emphasis placed on winning and changes coming to the qualifying process. More...