Other mistake: During the chase between Bo and Luke, and Jimmy and his father, Jimmy is shooting at them with a shotgun. He at one point hits the top corner of the driver door on the General Lee. , but he is shooting from the passenger side of his father's truck.
Continuity mistake: Bo is waiting for Luke's escapade with Laurie, and meanwhile listens to Al Unser Jr.'s story narrated by Laurence Fishburne. He checks out of the case of the tape propping it against the left or the right of the steering wheel depending on the camera angle. (00:02:40)
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.