The National Petroleum Council presented a technical study August 1 to Energy Secretary Steven Chu concluding that the internal combustion engine will be around for decades to come and that there is no clear way to reduce greenhouse gases by 50 percent in the transportation sector by 2050. Secretary Chu requested in September 2009 that the council undertake a study, Advancing Technology for America’s Transportation Future, that would provide advice on how to accelerate alternative vehicle fuels and technologies through 2030 in the transportation sector; he supplemented his request in April 2010, seeking advice on how to reduce GHG emissions in the domestic transportation sector 50 percent by 20250 relative to 2005 levels.