Here's my take: The study's authors are right in the frame of the way they are measuring cost. However, it's important to note that the hybrids cost more over a life-time of energy usage because they are relatively new technology. The traditional internal combustion engine, as an established technology, is much cheaper to manufacture, market and dispose of. As hyprid technologies evolve, the cost will come down, as will the energy required to build them.
More to the point, for the last two years, and for the first time ever, oil and gas exploration companies have found less new reserves then the amount they refined and sold. The oil is running out. It may take a 100 years, but those last 50 will be ugly unless we invest in new technologies now and make them cheaper down the road.
But it's all food for thought.
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