Instant Survey: Gas Mileage

I remember the days when my grandpa kept a careful log of mileage, gallons used and cost per pump. That was when "conservative" meant careful. Now it appears as though concern about gas mileage is making a comeback. I'll confess that I'm guilty of ignorance about the mileage on my '97 Sentra, but starting with the new year I'm going to keep track (and I'm going to replace all the bulbs with compact flourescents, and I'm going to compost everything, and I'm going to only wash with cold water, and...)