It seems like everybody is related in NASCAR. Joking aside, there are numerous brothers who race against one another, like Kyle and Kurt Busch. It hasn't always been an easy road for the Busch brothers though. In 2007, while racing for a million-dollar prize in the all-star race, Kyle dove below Kurt in an attempt to make a pass. Both cars wrecked and the bad blood stayed between them for some time.
They eventually reconciled, but both are extra wary of the other during races.
Other racing brothers through the years include Bobby and Terry Labonte, Jeff and Ward Burton, Geoff and Todd Bodine, and Bobby and Donnie Allison.