DJ is a member of the Tuner Cars. He has a built in sound system. He and the other tuners were driving along the Interstate when they noticed a sleepy Mack. They decide to have fun with him, with DJ playing Kenny G's Songbird to cause Mack to sleep, until Snot Rod's loud sneezing causes them to flee the scene. DJ later appears in the epilogue when he and the other tuners were caught by Sheriff and were impounded. They were later sent to pull Bessie, in which some hot tar splashed on them.Tuner Gang ran out of gas and went into hiding, he could have been found in the small cornfield just northeast of the Fillmore's Fields Rally entrance, which is now no longer present.