Continuity mistake: When Max reverses the interceptor at the end of the opening chase the front wheels are straight. When he runs back to the truck the front wheels are now turned to the right and the side of the car is a lot cleaner.
Continuity mistake: At the end of the opening chase the landau rolls and Max skids to a stop as he passes the truck. Look at the cab - it is facing down the road, but when Max gets out the cab is now facing across the road in front of the skid marks the car has just made, indicating that the interceptor should have gone through the truck.
Continuity mistake: The amount of dirt on the interceptor and engine blower changes throughout the opening chase scene from very dirty to clean on close up shots, and dirty again on the sides.
Continuity mistake: When Max is first trying to get the semi to start up, the Gyro Copter is parked right where the big yellow Mundi Mundi Lookout sign was from the opening chase scene.
Continuity mistake: As Max runs up to the bus to man the flamethrower, note the Warrior Woman on top of the bus and the gang member standing in front of the bus door. Before, from inside the bus, they had shown the Warrior Women jumping down and slitting that gang member's throat.
Continuity mistake: As Max gets out his car after first finding the Gyro Copter there is a shot from directly above him and you can see no shadows behind his car on the sand, then as the shot changes to Max's' face as he approaches the Gyro Copter there is a long deep shadow of a tree branch cast just behind his car.
Answer: Maybe the Judeo-Christian bible "The meek shall inherit the earth" (Matt 5:5). Not much of a stretch that someone in that environment would change meek to vermin.
Nikki