Think about the problem the Middle East countries have, sort of like a drug dealer. If the price gets too high then alternatives become attractive. The US is driving something like 10 million miles less / month than a year ago. Wind power, biogasses, the whole movement has started.
I bought a 65 mpg scooter to get to work (SUZUKI Burgman 400 2008). 3 months = 3000 less miles on the truck (200 gallons) and 3000 miles on the scooter (46 gallons) * 4 = 600 gallons less in a year, $2500 in my pocket.
Less truck maintenance (3 gallons of engine oil / 5000 miles, 5 gallons of transmission fluid / 12000 miles, bypass filters, air filters 1/year, radiator fluid @ 30000 miles), scooter maintenance (oil filter $5 + 2 Orings ($1)) every 4000 miles. More risk for sure, not for everyone, but works for me.
The product got too expensive, we found alternatives, now do not HAVE to go back. $65 / barrel would certainly unwind some of the conservation issues though.
Just like generic drugs. If it does the same thing at a lower price it probably will stay. Wind generation is not going to go away. Fuel cell technology is not going away.
I would like to see $11 / gallon like in the EU. My boss went to Scotland and rented a diesel midsize luxury sedan that got 55 mpg. Why can't we do that?
The scooter is here to stay though, I am finding I like to ride it over and above it's economy function.
Bob Weis