Well, most gas won't be readily available or potent for long, so those Hummers and Escalades, etc. will eventually become most useful as road blocks.
But it's always good to have a good manual siphon on hand. (You ever inhale gasoline?) The one I have and use here in the Safecastle courtyard (actually I have several of these on hand for different liquids) is the Shaker Siphon. It works like a charm every time.
Check it out ...