If Venezuela carries out its threat to base oil on your Euro instead of the US Dollar (as I think Russia already does) and the other large oil producing countries follow suit, we'll be begging for $9/gal here.
Aside: Gas here went to $2.79 yesterday. Today a gas station owner I know warned me, "Just got a call from xxxx oil. They're telling us to go up 50 cents at noon, to $3.29. If you need gas, you'd better get it now."