Wow. We were thrilled to see a "low" price of $3.66 here in northern Connecticut this weekend.
Fortunately a local supermarket chain here (Stop & Shop) has Gas Points Rewards... we accumulate points by buying groceries, then drive a few miles to Massachusetts (slightly lower gas taxes than CT's), and usually fill up both cars for about $2.89/gallon. That's the price when gas here is about $3.89+.
Still $3.54 in central Wisconsin today. (Regular)
Diesel $3.99