Continuity mistake: When Boss Hogg is at the rally, he is speaking into a microphone. Between every shot of him talking, the black microphone cord is in a different position. It is very noticeable. (01:20:50)
Continuity mistake: One of General Lee's wing-mirrors gets blasted off, but it reappears in a later shot. But once Bo and Luke get General Lee to be fixed, it's missing again.
Continuity mistake: When Daisy Duke is talking to Billy about the sponsorship of his car, her hair on her left side moves between shots, from behind her shoulder to in front of her shoulder, whilst she is talking. This happens with her hair numerous times throughout the movie.
Continuity mistake: The General had to tilt on two wheels to squeeze through the narrow opening of the barn door. When the General crashes through the back of the barn you can see that the barn door is wide open even before the police start to open it further.
Continuity mistake: When Roscoe and the judge are in the courtroom and the town comes to object the strip mine ordinance, the courtroom doors are held shut by a night stick. When the townspeople start to shake the doors you can see that the night stick slides to an angle, then when they cut to a closer view the night stick is level once again. (01:33:35)
Continuity mistake: On the way to the courthouse, Bo is about to drive up a ramp that Cooter set up in front of the barricade for him. At the end of the ramp is a big strip of wood, but as Bo rides up it, the wood has vanished in order to allow him to make the jump. (01:31:55)
Continuity mistake: The Dukes are being chased through a field by countless police cars. The car is kicking up mud and dirt and getting dirty. Eventually the General nails a police car on the right front end (left side facing the film viewer). The car is catapulted up onto two wheels and the General miraculously slides through a barn. However, even more miraculous is as the General goes into the barn, the car is completely polished and shows no front end damage at all. The car leaves the barn in pristine condition.
Continuity mistake: When Bo and Luke pick up the General Lee when Cooter has finished fixing it, there are shots flashing between different parts of the new General. One of the shots is of the word Charger, which is located on the headlight cover when it is closed, but in all the shots before and after the headlight cover is open.
Continuity mistake: When Sheriff Rosco enters the bar and the Duke boys stand in front of him, in the shot from behind Bo loosens the strap of the helmet he is wearing but does not unclip it. In the next shot it is suddenly unclipped and loose, and he then removes the helmet. (00:15:50)
Continuity mistake: As Roscoe is trying to get Sheev's attention, the gummy worms in the pots, on the counter, change colour and position. (00:31:10)
Continuity mistake: The arrangement of the core samples in the safe changes, just after Sheev walks away. The two samples in the bottom left move to being in the centre. (00:36:50)
Continuity mistake: As Boss Hogg rolls backwards over his desk as Uncle Jesse punches him; watch the items on the desk as he lands on the floor. In the next shot the items are in different positions and some items are different. (00:49:40)
Continuity mistake: When Bo is being chased by Campus Police, he tells everyone to "Get Skinny" as he squeezes through two cars, and leaves quite a little bit of damage on each side. Yet when Bo is driving on the rally track, there's a shot from the right and no damage is visible.
Continuity mistake: When Luke and Uncle Jesse are in Boss Hoggs' car, in the racing scene towards the end of the movie, Jesse is just about to start lighting and throwing the jars of moonshine. Just before he does, when he takes a drink from one his right hand is holding the cap on his head and the jar is in his left, but in the next shot the jar is in his right hand and the cap is in the left.
Continuity mistake: From the first time Boss Hogg appears on screen he has a goatee beard, apart from the scene towards the end in the courthouse when Uncle Jesse punches him.
Continuity mistake: Sheev breaks down the courtroom doors, causing the sides of the doors to get splintered down the sides. Yet in the next wideshot as everyone enters the courtroom, the sides of the doors show no damage. (01:33:40)
Continuity mistake: When the Duke's are in General Lee on the highway, people pass in their vehicles and shout at them. In some shots Bo has his hands on the steering wheel and in some shots they aren't. (00:40:35)
Continuity mistake: As Bo drives along and Billy is driving alongside, ramming Bo's car, in one shot the metal framing on the front of Bo's car falls down diagonally, yet in the next shot it's back up straight and fixed. (01:31:55)
Continuity mistake: When Cooter drives up to the police blockade with the flatbed extension, there is a wall of metal at the front of the "ramp" (the end closest to the cab). However, this soon changes to just a flat surface when it's the POV of the ramp from the car's perspective.
Continuity mistake: When the gang walk over to General Lee, Luke spots them and tells Luke to roll his window up. He rolls it up an inch before one of the gang stops him. In the next shot no window is visibly rolled up. In the next shot the inch of window is back again. (00:56:20)
Answer: It was never mentioned on the show but the producer/writer has stated they died in a car crash in public and on the DVD.