A wind tunnel at Moffett Field normally used to test airplanes and other things that fly is being used to test the aerodynamics of a big diesel truck — to save up to 3.4 billion gallons of fuel ...

In anticipation of a second Donald Trump administration, which would have likely thwarted their effort to phase out the sales of big diesel trucks, California regulators withdrew waiver and ...

California’s Advanced Clean Fleet rule, which phases out diesel trucks, was one of the most ... saying electric and hydrogen big rigs are not practical for long-haul uses and that it would ...

California’s Advanced Clean Fleet rule, which phases out diesel trucks, was one of the most ... saying electric and hydrogen big rigs are not practical for long-haul uses and that it would ...

Times of San Diego will send you the top local and state news at 8 a.m., 365 days a year. Sign up Diesel trucks leave the Port of Oakland with cargo. (File photo by Martin do Nascimento/CalMatters ...

Daimler Truck North America resumed diesel big rig truck sales in Oregon on Monday. The company abruptly halted sales of its internal combustion engine vehicles late last month, after receiving ...