[3] Energy efficiency does not happen by itself

Extreme conditions can be useful to explore boundaries. With a cost of 100 $ per gallon, not to talk about the human cost of getting fuel to the frontline, efficiency measures become increasingly cost effective. Still not all cost-effective measures are being pursued due to other priorities. What hope do we have if energy efficiency doesn’t even make it to the battlefield, where its absence costs lives and 100 $/gallon?