Last year, over the summer months, it was all the Kyle Busch show, but as the weather cooled off it became clear, entering the Chase, that Jimmie Johnson would tie Cale Yarborough.  Can Busch repeat over the summer months a long stretch of racing that saw him become a legitimate threat to Johnson?  It seemed like when the weather got hotter, the M&Ms team, led by Steve Addington, seemed to be performing at a championship level.  Or, might this be the year of the 50 year-old, Mark Martin?  The answers begin at Sonoma, then Loudon.