Revealing mistake: If you look closely at the pen tip when Snowman is writing the note to Coors to send the bill to Big Enos Burdett, you can see that it is not in the writing position, it is clicked shut. (00:15:57)
Revealing mistake: When Frog makes her "We're going 110." comment, they then show a close-up of the dash-board. Even though the speedometer does show them to be going 110 (albeit km/hr, not miles), the ignition key is in the 'off' position, and the 'amp' gauge shows '0'. This is a clear indication that the engine was not actually running during this shot. (00:21:00)
Revealing mistake: When Frog says "We're going 110" she's misreading the speedometer. It shows that they're going 110 kilometers/hr, which is 68 miles/hr. Also, the ignition is turned off and the oil pressure and temperature gauges read far lower than they would if the car was actually going 68mph. There's also far too much dust on the dash and gauges for a brand new car that hasn't been on any dirt roads yet. (00:21:00)
Revealing mistake: In a scene where Frog is riding with the Bandit, she's resting her head on the center gearshift console. Although they're supposed to be cruising down the road, the automatic transmission shifter is in neutral.
Revealing mistake: In the scene where the Trans Am is hiding among the truck convoy, you can see that the vehicles are all on the wrong side of the highway, as if to let the camera vehicle travel on the normal side of the highway. Notice the missing westbound lanes in the background as the vehicles are pointing directly to the viewer's right...then the lanes are back when the vehicles are shown from the front or rear.
Revealing mistake: In the chase scene with the cop taking a "10-100," the patrol car loses control and goes backwards into a lake. But if you look closely as it plunges in, you can see the backup lights lit, which is impossible if the car was in drive.
Revealing mistake: When Sheriff Justice tells his son to take the handcuffs off the man, you can see they are already open.
Revealing mistake: Just after the once local police officer has rolled his car, it shows another police car on the highway. This police car then does a hard turn left. When he does, you can see skid marks from previous takes in the exact spot that he turns.
Revealing mistake: Buford catches the Captain in the trailer, and instructs Junior to take the cuffs off - if you look closely, the cuffs were already undone.
Revealing mistake: When Smokey jumps the ramp into the football field, there are no tyre tracks. When Sheriff Justice drives up to the ramp, there are tracks that stop short of the ramp. Obviously from previous takes.
Answer: The trailer appeared in a recent episode of "The Walking Dead"
The trailer on the walking dead episode is a replica it's not the original one used in the movie as the one in TWD is a standard low slung with air baffles the original one doesn't have those and is also refrigerated.