I don't foresee this happening. There is only so high that gasoline can go before alternative forms of energy become viable source of portable energy. The price doubling ever few years means in 20 years the price would be somewhere between 20 and 80 times its original price. Unless gasoline becomes obsolete this seems incomprehensible to me. I would expect the upper limit on gas prices to be somewhere around 5 times what they are today. Presumably at some point before this other technologies would take over.