Essentially peddling gas futures, Gallons lets you pre-purchase fuel at today's prices, then put it on a card valid at 200,000+ stations across the country, saving you cash when prices goes up. You can check your fuel balance/buy more online, and they'll even refund your nominal annual fee if you don't manage to save any cash in the first year b/c of falling prices -- so yeah...to get your dough back, you've got to forget to use your card for a year.
