My personal belief is that the famous "Peak Oil" will not be the end of our civilization as some do predict, but it sure will cause a terrible economic crisis like in the 29 and later in the 70s. The peak oil crisis will mainly be the crisis of the gasoline automobile as private transport, since if excluding the consumption of oil for fuels would delay any peak for many years....
Wether we are able to develop another energy source to impulse electric cars is yet to be seen, but I'm pretty sure that in less than 10 years the cars we know today will have to dissapear from the roads.
This is a pretty important change coming, and I hate it because I own a classic BMW M3 I love a lot, and looks as if I'm going to part with it