Gold or Oil?? whhich will cost more in the Future?? Gold there is a machine that makes 1 liter of disel ( fuel ) in around 5 minutes , you cant argue with that!!
I'd have to say gold. Eventually, oil will likely be replaced by some other fuel source. Gold, however, will only get rarer (unless someone perfects alchemy).
Oil. Gold is just for vanity whereas oil is for fuel. Although did you know that gold is used as a catalyst for some chemical reactions? However oil provides fuel via fractional distillation and therefore is better...