Continuity mistake: When the Sheriff's car is being chased in the beginning, you can see that the driver is wearing a ball cap. At one point, you can see the hat the unknown driver wears turns to the hat worn by Rosco, as you can see the brim. Later, it's revealed that the unknown driver was Cooter.
Continuity mistake: When robbing Boss Hogg, the guy ripped the pocket of his jacket. Later at the Boar's Nest, you see the same pocket undamaged. Then when he's in the building, it's ripped again.
Revealing mistake: When Turk pushes Bo onto the tires, you can see his stunt double.
Swamp Molly - S1-E6
Continuity mistake: Daisy, while driving Uncle Jesse's truck, uses a rope to tilt over two barrels of oil in the bed of the truck. After, during certain camera angles you can see the barrels are still upright. (00:25:10 - 00:25:55)
Swamp Molly - S1-E6
Continuity mistake: Luke is in the ice cream truck right behind Bo in the General on a dirt road. As Bo calls Daisy, he's suddenly on a paved road with nobody behind him.
Revealing mistake: When the sheriff's cruiser is first seen, you can see Cooter's yellow cap. After the jump, you can see the black helmet of the stunt driver, and the patch of the Sheriff's office.
Answer: Various reasons, but mainly to drive the Dukes out of Hazzard County because the family have been foiling his schemes since his and Uncle Jesse's bootlegging days.
Captain Defenestrator