Waste o' time

Today on the way to Roanoke I had to stop and use the bathroom and get gas. So I see a sign right outside of Boone's Mill and decide it is as good of a place as any. I pull off on the exit and go about 2 miles to a gas station where I pay 3.57 for gas. I get back in the car, drive 2 miles back to 220, and as I get to the end of the entrance ramp, I see a gas station right on the side of the road. The real kicker is gas was only 3.47 there. So basically I drove 4 miles out of my way to pay 10 cents more a gallon.