Interesting...
I remember gas at $0.27 to $0.29 a gallon (with attendants, as well). During "price wars," I remember it as low as 21 cents/gallon. That was 1963.
I put that price in for 1963. Adjusting for inflation, gas should cost $2.05 in 2008.
No attendants to wipe your windshield, check oil, or put air in your tires, though.