Tesla touts vehicle speed and range with new upgraded battery

By Alexandria Sage SAN FRANCISCO (Reuters) - Tesla Motors Inc Chief Executive Elon Musk said on Tuesday the company will offer a larger upgraded battery pack for performance versions of its Model S and X vehicles that will extend range and allow for super fast acceleration. The new 100 kilowatt hour battery pack means high end versions of the Model S sedan, called the P 100D, will be the world's fastest accelerating car in production, the Silicon Valley automaker said. "These are very profound m