California amends rules to push vehicles toward hydrogen, electricity, biofuel

Enlarge / Detail of the plug of an electric car being charged (credit: Getty Images) On Friday, California’s Air Resources Board (CARB) announced that it would tighten restrictions on transportation fuels in the state in the hopes of spurring adoption of electric, hydrogen, and biofuel-based cars, trucks, buses, and even planes. Since 2011, CARB has […]