Musk Says Selling Cars Is Good, But Saving the Earth Is Better

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Elon Musk, chairman and chief executive officer of Tesla Motors, speaks during an event the company's headquarters in Palo Alto, California, U.S., on Wednesday, Oct. 14, 2015. Tesla Motors Inc. will begin rolling out the first version of its highly anticipated 'autopilot' features to owners of its all-electric Model S sedan Thursday. Autopilot is a step toward the vision of autonomous or self-driving cars, and includes features like automatic lane changing and the ability of the Model S to parallel park for you. Photographer: David Paul Morris/Bloomberg *** Local Caption *** Elon Musk

Selling all-electric sports cars is good, but what billionaire Elon Musk says he really wants is to save the planet.

In a Paris presentation about climate change, the 44-year-old Tesla Motors Inc. co-founder argued that regulators need to discourage carbon emissions -- and not just because it would help him sell more of his cars with price tags of $75,000 or higher.