peak oil is only a myth if one believes in abiotic oil. i don't.
we might have 100 to 130 years of natural gas at current consumption rates. if we run cars on it, how much does that increase demand? how much does that shorten the years of natural gas supplies? and what would be the purchase price of that NG if demand quintupled?
in my opinion, we need to massively increase our electrical grid to help us bridge to whatever is coming after oil. we need to seriously look at nuclear technology, and possibly not uranium based nuclear.