'Mad Max 2: The Road Warrior'
The world inhabited by Max Rockatansky, aka Mad Max, is one where society has all but fallen apart. War has ravaged the landscape and twisted the people lucky enough to have survived. Energy is in short demand, bands of criminals roam the roads, and life in general is cheap.
The plot of "Max Max 2" centers around a small oil refinery operated by a gentle band of people prone to wearing headbands and the color white. When Max, played by Mel Gibson (pictured), stumbles upon them, he finds their compound under siege by a group of marauders led by the massive Lord Humungus, a hockey-masked mountain of a man whose size is only outdone by his mastery of language. Max gets caught up in the action and helps the people break the grasp of Lord Humungus.
"Mad Max 2" paints a not-entirely-inaccurate portrait of what life would be like if oil supplies were cut off. Our modern society lives and breaths cheap oil and would fall to pieces if that oil weren't available. Without access to cheap energy, it's not much of a leap to think everyone would put on biker leathers and form into groups of buggy-driving bandits. Shotgun.