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The anticipated proliferation of driverless cars will bring a brand new problem for the world’s biggest oil companies -- how to advertise to a machine.

Cie. Maritime Belge SA has built the first commercial ship that runs on hydrogen and produces zero pollution, taking the world a step closer to cargo without emissions.

Tesla Inc. said the expected price for its all-electric Class 8 truck will range from $150,000 to $200,000.

Nikola Motor Co. plans to locate its emerging network of hydrogen fueling stations to accommodate the logistics network of a major manufacturer, according to the truck maker, which did not identify the manufacturer.

Ryder System Inc. awarded a four-year fueling contract to Clean Energy Fuels Corp. to supply Ryder’s fleet of liquefied natural gas heavy-duty trucks serving Toyota Motor Manufacturing’s plant in Georgetown, Ky., Toyota’s largest production facility in North America.

Elon Musk knows how to make promises. Even by his own standards, the promises made last week while introducing two new Tesla vehicles—the heavy-duty Semi Truck and the speedy Roadster—are monuments of envelope pushing. To deliver, according to close observers of battery technology, Tesla would have to far exceed what is currently thought possible.

The sound — and smell — of thousands of idling trucks at the ports of Los Angeles and Long Beach could be fading if a new pilot project to convert them to part-time electric vehicles sticks.

Large for-hire carriers and major retailers are reserving their places in line to be among the first to test the all-electric Tesla Semi in their operations.

Video: Cummins' Tim Proctor, left, talks with TT's Roger Gilroy about meeting the fuel economy needs of customers who are concerned about global warming.