Elon Musk's salary benefits package at Tesla was excessive and inappropriate. Judge determined that the compensation package was unfairly given to Musk by the board of directors and invalidated it.

"Never register a company in the state of Delaware," Musk tweeted after the decision. The agreement between Tesla and Musk is considered the largest of its kind in the world and is responsible for a large part of Musk's personal fortune. The decision comes at a sensitive time for Tesla, which was overtaken last quarter by China's BYD as a manufacturer The world's largest streetcar.