Continuity mistake: The chase with Daisy in Rosco's squad car ends with a piano slamming into the car. When the truck hauling it comes to a stop, there's a reaction shot of Daisy at the wheel of the squad car. In the next shot, when the piano hits it, the car is empty. A second later, Rosco gets out of the truck and Daisy is back in the driver's seat. (00:30:00)
Other mistake: In the first scene when Bo and Luke are practicing with the General Lee, you see Bo using the clutch, but in the next shot both hands are on the wheel. He didn't have any time to move his hands in about a milisecond.
Audio problem: At the end, as Bo reaches in to honk the General's horn to announce Rosco's arrival, you can see his hand doesn't touch the steering wheel.
Audio problem: During the final run to the Boar's Nest, Luke is driving General Lee. There is one final jump, and you hear Bo's rebel yell, but Bo is at the Boar's Nest.
Continuity mistake: After picking up Marlowe, the deputy with them mentions the car following them. They're out in the wide open area, but the car in the mirror is in the downtown area. Then after a quick cut, they're in the downtown area of Springville again.
Visible crew/equipment: After the fertilizer truck carrying slot machines is intercepted, when Daisy runs off just as Luke and Bo place hoods on the men, two white tape marks are visible on the ground where Daisy had been standing. (00:16:30)
Other mistake: When Enos is chasing the boys through the town square, you see the General Lee parked in a parking spot, but the POV is meant to be from the General Lee.
Swamp Molly - S1-E6
Audio problem: In Hogg's office in the Boar's Nest, after Roscoe tells of the activities, Boss goes to put the needle back on the record. Trouble is, the record doesn't move until Boss turns it, but the music started before the record moved.
Route 7-11 - S1-E12
Visible crew/equipment: At the farm, Luke is trying to sweet talk Jesse. As Luke crouches, the shadow of the boom mic is moving on the wall.
Continuity mistake: In the previous episode, Boss Hogg had a large brown mole below and to the right of his mouth. In this episode it's gone.
Daisy's Song - S1-E2
Continuity mistake: In the close up shots of the General during the junkyard chase, Daisy is sitting between the boys. In the shots from the car being chased, she appears to be in the back seat, looking over Luke's left shoulder.
Visible crew/equipment: As Bo gets out of the General at the orphanage, you see the light panel reflected on the vent window, and the shadow of the camera and operator on the ground at the bottom left of the shot.
Continuity mistake: As Bo and Luke pull up to the wrecked Sheriff's car, the roll bars are not in the General. As Bo climbs out, the bars are suddenly there.
Audio problem: As Jesse, Bo and Luke are about to leave after Jesse bails them out, Jesse says "C'mon." It's voiced by someone else. (00:05:50)
Swamp Molly - S1-E6
Revealing mistake: When the truck goes into the water, you can see the driver was either a stunt driver or a dummy. Also, you can see the top of the truck just under the surface of the water, suggesting it was on the bottom. A few seconds later, and all you can see are bubbles.
High Octane - S1-E5
Continuity mistake: As Bo and Luke are talking to Cooter, from a distance Bo raises the coil of copper tubing chest high on Jessie. After the angle change, Bo raises the copper tubing again.
Other mistake: When the camera is close up on McQuade, you can see the cylinder of his pistol is empty.
Route 7-11 - S1-E12
Character mistake: In this episode, they constantly refer to the semi as an eighteen wheeler. The tractor would have tandem (two) rear axles with dual tires. This one has only one rear axle on the tractor. Added up, the rig only has fourteen wheels.
Route 7-11 - S1-E12
Other mistake: In the opening sequence, there's a shot from on top of the General Lee. As they do a one-eighty, you can see skid marks on the road where they have done other turns.
Visible crew/equipment: When the hearse is pulled up to the coffin works, the driver is left alone to look at his map. If you look to his left, you can see the reflection of the lighting rig.
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