Continuity mistake: At the baseball field, a steamroller comes crashing through the billboard and rolls over a boy on the ground. You can see the roller's steering wheel falling off when he crashes through the board. The next shot, it is there again.
Continuity mistake: The amount of blood in the stains of Emilio Estevez's shirt changes between scenes. Sometimes they are small stains, close to the holes, then they are larger, as if blood seeped into the shirt, then they are smaller and slightly different in position in a later shot.
Continuity mistake: At the baseball park when the steamroller runs over the kid, first the the kid has his arms on top of his head, then in the next shot his arms are down.
Continuity mistake: When the trucks start circling the Dixie Boy, they show the Green Goblin truck starting the circle, and you see the old blue and white truck behind the orange Bic truck, then the next scene shows the toilet paper truck etc. and the blue and white truck is shown again.
Continuity mistake: When the bulldozer and army car show up at the Dixie Boy, the army car is missing the cap on the horn, but then when it is giving Morse code the cap appears.
Continuity mistake: The angle and height of the bridge changes depending on close ups and long shots.
Continuity mistake: When Curtis is looking inside the gas station, if you look to the left where the pile of junk is, there's a white vehicle that's missing both headlights. After the tow truck tries to hit Curtis the white vehicle in the junk pile has a brand new left headlight.
Continuity mistake: When the newlyweds wait for the gap in the line of trucks, their car has a mattress on top, covering the car. But seconds later, it is gone and never reappears.
Continuity mistake: After Deke unloads into the burger joint's sign to silence the speaker, and in revenge for his dad, after all the commotion is done two holes magically appear in the front cover.
Continuity mistake: When the Bible salesman pulled in, the left two hubcaps came off. Later, as the garbage semi goes to hit it, all four are missing.
Continuity mistake: We see a longshot view of the trucks circling the Dixie Boy, then we see Hendershot saying the trucks can't run if they're depot-ed, then we see another long shot of the trucks circling the Dixie Boy and the trucks are forming the circle again.
Continuity mistake: When the Green Goblin truck is starting to back up to hit the bible salesman, if you look to the left of the screen you can see the red Autocar garbage truck parked, despite riding around the Dixie Boy as the bible salesman is cussing at it.
Continuity mistake: When Connie and Curt go to the gas station a tow truck pulls out to the street on the driver's side - the door is there. But when the truck plows through the front of the gas station and hits Curtis, Curtis sits up and the driver's side door of the tow truck is gone.
Continuity mistake: When Bill and Brett are talking they show the red Auto car Zeke's garbage truck and it's parked between the old blue truck and the toilet paper truck, but when the garbage truck is about to hit Duncan it's parked next to the white Mack cab over truck.
Continuity mistake: During the bridge scene when the watermelon truck crushes the station wagon they show a long shot from the bridge and you can see the watermelon truck crushing the station wagon again. Also the yellow car is in a normal position despite flipping backwards before.
Continuity mistake: When Wanda is mowed down by the machine gun, she fires the rocket launcher. It was fired at a about a forty degree angle, but the rocket went directly at the beer truck. If you look, the rocket and its exhaust trail disappear about a second before the trailer blows up. Also, there is no impact spot from the rocket.
Continuity mistake: When the log truck is chasing Connie and Curtis, they look back and see it closing the distance. Then it pulls alongside, and Connie says "It's gonna bump us!" A second after that, the camera looks at them. They are looking back at the truck, rather than to their left where it supposedly is.
Continuity mistake: When the bike flips the kid in front of the scoreboard, the steamroller comes crashing out and kills him. It would have had to already been in motion for it to move like it did, therefore been seen moving before the breakout. If it was hiding behind the board and just starting to move, it would have been a lot slower.
Continuity mistake: When the bible guy gets backed into, he flies over the guardrail and there's no blood on the truck at all. When it drives away, there's blood splattered everywhere.
Answer: It should be noted, the ending title cards seems to set it up so there are no plot holes and answers any "why" questions (which, intentional or not by King, can be debated). While the opening premise is the comet's close pass by Earth caused all machines to turn on people, at the end, the Russians blew up a UFO 2 days later, suggesting that it was the aliens controlling the machines. Bill suggests aliens are trying to wipe out humanity (although at that point he's just guessing and had no evidence of an alien or UFO present), but it can be debated the actual premise was that aliens were just testing or experimenting on people.
Bishop73