Despite supposedly being dead, several bodies on the ground can be seen breathing at various points.
There should be millions of bicycles, yet the assembled group never uses them, even though it would make travel both faster and easier.
Regardless of where the scene is supposed to be set, the location always looks like the show's Spokane, WA filming location.
In seasons one when the crew goes to Warren's home town of Castle Point, Missouri, there a road sign as they're leaving southern Illinois. The sign states that Castle Point is 62 miles from St. Louis, when in reality Castle Point is located within St. Louis county.
Despite going days without showering, many of the male characters are somehow able to remain clean shaven.