Days of Shine and Roses - S2-E1
Continuity mistake: When Rosco goes into the trees after the boys run him off the road, the amount of damage to the car is negligible, yet at the end, the car is crushed in on the sides.
Days of Shine and Roses - S2-E1
Other mistake: When the General does a jump during their shortcut, it goes through a tree, and lands mostly on the left side of the car, but the next shot, it's still going.
Days of Shine and Roses - S2-E1
Continuity mistake: When Rosco gets out of the car with the Detour sign, the arrow points to the right, the way Boss went. When he sets the sign up, it points left. Then after Luke grabs it and sets it out ahead of Jessie, it points back to the right.
Days of Shine and Roses - S2-E1
Revealing mistake: When watching the film in the beginning, one of the cops pursuing Jessie and Boss rolls over. As he does so, you can see the roll bars in the car, which accounts for the car not crushing.
Days of Shine and Roses - S2-E1
Revealing mistake: When "Spike" goes to pull the front fender of the car off, you can see the square outline of the spot meant for the spike.
Days of Shine and Roses - S2-E1
Revealing mistake: As Sheriff "Spike" Loomis goes to put the railroad spike into the car's door, there is a square outline of the spot set up for him to put the spike.
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