When you watch the Zipcar video "How to Zip: Fill 'er Up" (embedded below) you'll see a Zipcar customer finding out he needs to stop at a gas station. There's a Zipcar co-pilot in the backseat who gives him friendly, detailed instructions on how to get reimbursed for filling up the gas tank.
Mimicking a similar project in the UK, a US-based organization has launched FuelCard.org to help drivers save some cash on gas. The idea is seemingly simple: get a bunch of people together and give them a gas discount card, promise a popular, nationwide gas station chain that the group of people will only buy their gas, and the card holders in question get 10-20 cents off per gallon of gas. The site evidently started up last week, so we're not sure who the gas retailer will be, but if this