Today, Tesla sticks with plans to take its latest dealer fight to the Utah Supreme Court, our latest poll looks at what advice readers would give to friends with Volkswagen diesel cars, and researchers say transportation now accounts for the largest share of U.S. carbon emissions. All this and more on Green Car Reports.

Tesla still plans to take its Utah dealership fight to the state's supreme court after failure to find a legislative compromise with franchised car dealers.

What advice would you give a friend with a Volkswagen diesel? Our poll results show what readers would say.

Will electric buses replace propane ones at Utah's Zion National Park? Officials are evaluating that possibility.

Missing emissions gear means motorcycles may not be as green as cars in the real world.

Transportation is now the biggest contributor to U.S. carbon emissions, new data shows.

Stricter emissions standards for heavy-duty trucks will ultimately save operators $170 billion in fuel costs, the White House says.

Finally, Volvo and Uber partner to develop self-driving cars.

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