whitt moved up to stock cars in 2010, the same year he won the super license award for usac. whitt ran for the camping world east series championship, where he impressed by winning the pole in his first start at greenville-pickens speedway. whitt eventually finished fourth in points. whitt was rewarded with making his nationwide series debut at phoenix international raceway, where he made the race and finished 15th. the next week, whitt ran both the nationwide and truck series events at homestead-miami speedway, finishing 17th and 28th respectively, running the truck race for turn one racing. whitt drove for turn one in 2011 and competed for rookie of the year honors. after failing to qualify in the no. 60 truck at daytona, whitt drove the no. 93 for rss racing before returning to turn one. whitt won the pole at darlington, and became the first rookie to lead the truck series points after charlotte, winding up ninth in points at the end of the season. he also drove a third team red bull entry in the sprint cup series in the final two races of the season at phoenix international raceway and homestead-miami speedway, but ended homestead with a dnf near the finish of the race.