Tesla boss Elon Musk will receive a pay package worth over $1tn (740bn) if he hits a list of ambitious targets over the next decade, the board of the electric car firm has proposed. To get the package, Musk, who is already the world's richest person, would need to boost Tesla's value eightfold, sell a million artificial intelligence robots, sell another 12 million Tesla cars, and hit several other moonshot goals.