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A total of 15 states and the District of Columbia have signed a joint memorandum of understanding committing to work collaboratively to advance and accelerate the market for electric medium- and heavy-duty trucks and other vehicles.

Tesla Inc.’s relentless surge continued July 13 amid several upcoming events that include the possible unveiling of new battery technology from the electric vehicle maker, entry into a lucrative new market and the potential inclusion of the stock into the prestigious S&P 500 Index.

Chevron Corp. announced it is partnering with California natural gas retailer Clean Energy Fuels Corp. on Adopt-a-Port, an initiative that provides truck operators serving the ports of Los Angeles and Long Beach with carbon-negative renewable natural gas to reduce emissions.

Tesla Inc. reported a sequential gain in quarterly deliveries that seemed improbable weeks ago, sending its stock surging toward Wall Street’s most bullish price target.

California regulators already have issued a proposal aimed at lowering oxides of nitrogen and particulate matter emissions for new trucks built beginning in 2024, but federal regulators are still working to craft a separate nationwide low-NOx and PM proposal scheduled to take effect in 2027.

Tesla Inc. endured a roughly seven-week shutdown of its most important car plant in the world last quarter, but its brand-new backup factory may have saved the day.

Hyliion Inc.’s Class 8 long-range electric powertrain underscores the transition period of multiple alternative powertrains is at hand. And the powertrain, whose batteries are charged by an undersized natural gas engine, could prove to be an important step toward carbon-free over-the-road transportation, experts said.

Jacobs Vehicle Systems’ cylinder deactivation technology delivered a “host of performance-enhancing benefits” in a recent independent validation, the company announced, including raising exhaust temperature and improving fuel consumption.

House Democrats on June 30 will issue an ambitious plan to combat climate change, a move intended to reassure their base of supporters but that’s sure to inflame opponents on the right.

California environmental regulators approved a measure that within a few years will require truck manufacturers to transition a percentage of their sales in the state from diesel trucks to electric zero-emission vehicles.