Random detritus

Have you ever wondered what will happen when the world runs out of oil? It will happen some day ya know. I always thought of human civilization as one long linear improvement, but when oil is gone, we'll have to go backwards. There's just no way we can move all the stuff we do today without oil. How will airplanes fly? We can't all run electric cars or plant enough crops for biofuels. Will we take sailboats to Europe? Ride horses to work? Or we can all sit at home and virtualize ourselves to work. The highways will be empty. 95 could turn into a great bike trail. When you pump all that oil out, what fills it in?