"You can sit around at home till Doomsday and the prices at the pumps will stay fairly low, incessantly tempting you to travel. But the moment you decide to take off somewhere and head out on your trip, the price for a gallon of gas will go right through the roof!"
Gas-prices seemed fairly "stable" all summer, and so I delayed a road-trip for a while to "save up" or "accumulate" a number of errands so that hopefully my trip would be more cost-effective with regards to gas-consumption, but then when I stopped to fill up my tank in the morning when I was first heading out, the price had suddenly jumped over a quarter higher per gallon! Sounds like a classic case of "Murphy's Law of Gasoline Prices" to me!