Realist2
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Population growth
You need to assume 1 or 2% population growth to make your estimates credible. Over 23 years that almost doubles fuel consumption and would offset the gains in CAFE standards.
As DARPA has found, biofuels should be used for high values purposes like AVIATION. Ground transportation should be electric powered. Why waste fuel in a 20% efficient combustion engine when we have electric motors.
To solve congestion and avoid the problems with batteries, we should adopt electric powered guideway systems like http://www.skytran.netOn Where will biofuels and biomass feedstocks come from? posted 1 year, 10 months ago 16 Responses