When the bridge starts going up on its own, it's fairly high. Then we cut to a shot of a truck in the middle and the level of the bridge has dropped considerably - it's almost level. Then we cut back to longs shots and the bridge is at its original higher elevation.
When Duncan goes to get his son, his eyes are puffy from gasoline but there's no blood. Joe grabs his arms and we get a close-up shot of Duncan's face and there's blood all over his face. Then they cut back to longer shots and the blood disappears.
When the M-60 vehicle is pulling up to the Dixie Boy, you will notice that the horn is different from when it is giving the message in Morse code.
When the main Truck backs up, knocking the Bible Salesman into a ditch there is no blood. But as the Truck is pulling away there is blood all over the back of the trailer.
At the end when the Dixie Boy survivors are leaving on the boat the person piloting the vessel has wavy hair, is wearing a blue shirt with a shoulder holster and was never in the film at any point. In the next shot the vessel is being piloted by Steve with his curly hair and Dixie Boy jumpsuit.
You do not reload the M72 anti-tank grenade launcher. It is a one-time-only weapon designed to be tossed away after use.
At the beginning of the film, the caption reads EST, however since the "comet" occurs in June, it would already be EDT as Daylight Savings Time would have begun on Sunday, April 27th.
The M60 fires too many rounds when it fires at the people in the Dixie Boy. The Belt of ammunition does not have that many rounds in it.
A caption at the start gives the time, to the exact second, of the passage of the Earth through the extraordinarily diffuse tail of a comet. Such precision cannot be achieved, due to the impossibility of defining the start & end of the transit.
The gun mounted on top of the motorized turret can not be controlled by the turret as shown when the turret comes alive. The gun is a separate item mounted on top of the turret, not part of the turret's mechanical system.
When Curtis and Connie first get to the gas station and find the attendant dead you can see his back moving due to him breathing and not doing a good job of acting dead.
After the electric knife attacks Wanda the waitress, she leans her elbow on the grill, but she doesn't burn herself.
Signs visible throughout the movie list the price of diesel fuel at the Dixie Boy as $1.08 per gallon. Yet whenever the pumps are being used and the sale amount and gallons pumped are shown, the numbers work out to much less than $1 per gallon, actually just a miniscule amount over 56 cents per gallon.
When the old red Mack truck flies off the road flames appear underneath it before impact.
When Curtis shoots the ice cream truck, a human driver can briefly be seen at the wheel.
When Bill and Handy are talking outside, after feeding the Trucks fuel, the camera and crew is reflected on the windows of the Dixie Boy. Then you can see an umbrella with people sitting under it.
When the camera is in front of the Goblin truck, you can see the reflection of the camera car in the shiny bumper.
In the scene where Curt and Connie are attempting to get into the truck stop, the beer truck is ramming their car after they are freed from it. The driver of the beer truck is visible for a few seconds.
After the truck explodes, Curtis and Connie stop to watch and take a breather. As they do, the crew and lights can be seen in the chrome on the side of their side view mirror.
When the trucks start to gang up against the Dixie Boy, if you look at the chrome bumper on the Goblin truck right as it begins to pull out, you can see the pick-up truck that the camera is mounted on in the reflection.
The image of the earth shown at the beginning of the movie is reversed.
All machines are turning on people yet the newly weds drive a car for miles. The car never comes to life.
The comet entity can make weaponry operate/shoot like the machine gun and electric knife. The arsenal of guns in the basement and rocket launcher doesn't work, however
When the cans of pop started hitting the kids and they start running away, a can hits #7 (right side of the screen) and it takes him some time before he grabs his head and falls dead.