Have you thought of picking up an insight? You could double your mpg and cut your fuel costs in half. I remember driving my camry to work everyday and I think i spent about 40-50$ a week in gas, but I was driving 20 miles less a day than you, so about 200 a month. With an insight at 60mpg you would save roughly 1200$ a year, and that's not adding in around town driving.
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