http://www.slate.com/articles/business/the_juice/2015/06/peloton_technology_the_firm_wants_to_save_trucks_money_by_helping_them_drive.html

If the Obama administration gets its way, trucks are about to work a lot harder to fight global warming. As the New York Times reported just over a week ago, the Environmental Protection Agency may push trucks, which account for about 25 percent of vehicles’ greenhouse gas emissions, to make significant improvements on their current, pathetic fuel consumption of 5 to 6 miles per gallon.* Trucking companies will likely object strenuously, even though they stand to gain financially from using less fuel.