pekelo would have you all believe that there's a teeny weeny bit of oil left in the ground, underneath the ocean beds, and underneath the rock and permafrost that covers the earth (let alone the deserts).
He also would have you all believe that there won't be technological advances that will make extracting that oil cheaper and faster than ever.
Don't even mention shale to him.
This planet contains so much oil, we've only begun to discover the bare amount that flows nearest to each surface of any given spot.
Earth is a big planet full of oil, and we'll always make sure we can maintain adequate supply.
Oh, I almost forgot. There are hybrids and diesels that get 50mpg+ on the highway now (the VW Polo Bluetec Diesel gets close to 80mpg - a conventional Toyota Corolla gets 40mpg on the highway). Industry is figuring out how to double or triple the energy extracted from oil. Solar panels, wind mills and natural gas will help make us less reliant on crude than in the past. I'll be damned if we don't achieve 100mpg cars within 6-8 years. With efficiency gains like that, one barrel of oil will go 3x as far as it used to, or more. And that's just the beginning.