Toyota Motor Corp. and BMW Group are working together on next-generation batteries for green vehicles called "lithium-air" as their collaboration, first announced in late 2011, moves ahead in fuel cells, sports vehicles and other fields.

The troubles with Boeing's 787 Dreamliner are drawing an unwelcome spotlight for the Japanese maker of the powerful lithium-ion batteries that have become the focus of investigations into onboard fire risks.

Oregon state officials are proposing an alternative tax for drivers who have bought efficient or electric vehicles that seldom or never stop at the gasoline pump, where government has traditionally collected money to build and fix roads.

Oregon's stalled effort to reduce greenhouse gases from cars and trucks could get new life soon, as the state pushes for a new pollution-reporting mandate for fuel providers and the Legislature prepares to take a fresh look at the program.

If the trash truck or bus rolling down your street seems a little quieter these days, you're not imagining things. It's probably running on natural gas.

In a big-city mayor's bid to spur colleagues to think boldly around the country, 20 cities from Chicago to Springfield, Ore., are finalists in a $9 million urban-innovation contest created by New York Mayor Michael Bloomberg.

CEO Elon Musk said at a news conference at the company's design studio that the company's roadside Supercharger has been installed at six highway rest stops in California.