FOX TRAX has a way during the races only but not a lap by lap record during each race for each driver. I wish they did. It would explain a lot about adjustments coming out after a pit stop.
It's not available until the day of the Cup race so right not it will just be an empty space.
http://msn.foxsports.com/nascar/cup/foxTrax
NASCAR.com also has a lap by lap coverage but it's also just during the races and it's not a record of each lap during the race but just the present lap.