I have not seen a gas shortage in my entire lifetime of pumping gas!

Then you should consider yourself lucky. And by assuming that just because it hasn't happened to you it hasn't happened anywhere in America is a little bit narrow-minded.
I've lived through three:
1. Aftermath of Hurricane Andrew in Baton Rouge Louisiana
2. Aftermath of Kat-Rita in Baton Rouge Louisiana
3. Aftermath of Hurricane Gustav or Ike, 2008, Western NC. Ironically this was the longest lasting of the 3.
I rode my 250cc dual sport a lot during the last 2. And I have a few gas cans around and have since I joined this website. You'd be surprised how much less stress you feel when you're using 2-3 gallons a week, have 20 gallons on hand, and are not having to wait with all those other frustrated souls in the long lines, get pissed about the inevitable line cutters, see the pump run empty right when you get to it, get accosted by 'refugees', expose yourself to potential violence at the gas station etc.
The outcomes above have all been related to me by people who DID wait in the lines.
Thanks PO.com! I navigated the last two fuel shortages without a problem thanks in part to what I learned here. Certainly my 'solutions' are short term, but luckily the fuel shortages I've seen have lasted only 2-4 weeks. And in 2008 in particular, Pup55's work in the supply thread provided some warning that it was coming.
A nations military should only be used in a nations self defense, not to entertain liberal cravings for shaping poor nations into images of themselves by force. -- Eastbay
Shooting the messenger is typical when you are incapable of arguing against them. -- Airline Pilot