LONG BEACH, Calif. — The interest in alternative fuels is steady, and when customers call wanting, for instance, an electric truck, they want it right now, according to Penske Truck Leasing executives.

Daniel Gage, president of National Gas Vehicles for America, asked lawmakers March 14 for a five-year extension of alternative fuel tax credits and the alternative fueling infrastructure credit.

INDIANAPOLIS — Alternative fuels and green technologies will continue to evolve and secure their roles within the trucking sector, but diesel is still the most efficient and cost-effective fuel and will be for some time to come, Kary Schaefer, general manager of marketing and strategy for Daimler Trucks North America, told attendees at the Green Truck Summit here last week.

Trillium CNG, the nation’s second-largest provider of compressed natural gas fuel and related services, is expanding the type of alternative fuels it offers and will underscore how they are produced upstream to maximize emission reductions.

“California Regulates Cow Farts,” is how a New York Post headline put it, implying it was a wacky move by California Governor Jerry Brown. In fact, California’s methane law represents a serious attempt by America’s biggest dairy state to come to grips with a potent greenhouse gas.

COLUMBUS, Ind. — Cummins Inc. has unveiled a concept truck with an all-electric powertrain, highlighting the diesel engine manufacturer’s commitment to electric power as an important part of its future.

Volvo Trucks approved the use of diesel hydrogenated vegetable oils for all of its Euro 5 engines, saying the fuel “works very well” in the engine.