DAYTONA BEACH, Fla. (AP) - Christopher Bell started to unzip his firesuit and attach a microphone at a TV session with Fox when Jimmie Johnson popped by and teased the production team. "With rookies, you have to put it down the leg personally," Johnson told a staffer. Bell got a good laugh out of the moment, the seven-time NASCAR champion on the way out of the sport having fun with a rookie…