To go or not to go

That is the question. A friend of mine is getting married in Tennessee this weekend. I had planned on driving up there Friday evening, staying the night, going to the wedding Saturday, and then coming back Saturday evening. However, I am concerned that I may not be able to find the gas necessary to do this. I believe I can afford the gas, supply is what I'm worried about. I would hate to get trapped somewhere along the way. I've even considered getting some big gas cans to carry extra on the trip. Right now I'm not sure whether to go or not. I'll have to think about it and hedge my bets.