www.Gasbuddy.com

Pretty good site. It gives the lowest prices they can find in you area, nationwide, as well as the highest prices. The prices are 72 hours old or less, and they give you the address and an option to map it. It looks like the gas stations at the interstate exit #312 near our house are the worst place to fill up right now. As of this morning at 7 am they were $2.99 for regular. I have a full tank, though, and I am planning to severely limit travel to only church and Nana's house, until we go to Jacksonville week after next. 12 days and counting!