Ford dropped some of it's more gas-guzzling vehicles from production. I'd say that's a pretty big change in a lot of people's driving habits right there. In fact, a lot of the large SUV makers are cutting back on their biggest makes. I just bought a motorcycle. Admittedly, it was more about fun and less about fuel efficiency, but hey, I can go 160 miles on a tank of gas (3.4 Gallons). If nothing else, lower gas prices will help by bringing the cost of goods transport down. Who else has seen $1-$2 surcharges added to pizza delivery?

Of course, while food costs went up after fuel went up due to transport costs, don't expect it to go down. Food companies base their price largely on their compitor's prices. If no one lowers their cost first, no one has to ever. We HAVE to buy food.