It's the exponential growth in emerging markets that will open a gap between oil supply and oil demand – if all those cars run on petroleum-based fuel. That gap is …. Electricity and oddly enough hydrogen can be made from a multitude of sources. … I'm not familiar with how many million barrels of oil we use in transporation today, so I'm not clear on if that second chart is the incremental use over some time in the past (weird that an incremental chart doesn't start at 0). … …

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Toyota's Prius Chief Engineer Reveals The … – The Truth About Cars