Regarding the use of fuel, the Obama administration issued new regulations that require manufactures of automobiles to increase the efficiency of cars being made. This has been leading these car manufactures down a newer route of creating more efficient ways for these cars to run. These companies are trying to reach 35.5 mpg in only a few year and still hope that by 2025 it can be 55 mpg. Millions of dollars has been used by the government in research on how to go about with these improvements.
The government is not the only place that is researching new ideas but the military has also being turning to new ideas such as radiators, air filters, etc.. They are also trying to find a way to use the heat that the trucks/ cars produce and turn that into a form of power.
Overall there are many new approaches being made to move these alternatives along.
Source:
http://www.nytimes.com/2011/07/29/business/carmakers-back-strict-new-rules-for-gas-mileage.html?pagewanted=all&_r=0
http://www.usnews.com/news/blogs/rick-newman/2012/08/27/tough-government-gas-mileage-rules-good-for-drivers-auto-industry