There's a lot of driving in The Walking Dead.
The survivors drive from Atlanta, then back to Atlanta, then away from Atlanta in a caravan of vehicles.
Where do they get the gasoline to fuel their vehicles?
If I recall correctly, in the premier episode, Rick was unable to find enough gasoline for his single police cruiser to make it to Atlanta, and had to switch to horseback.
Additionally, wouldn't accessing gasoline from gas stations require electricity to get the pumps working?
So how did the survivors get enough gas to keep their caravan moving?