The board of directors that designed the pay package require him to hit several ambitious financial and operational targets, including increasing the value of the company on the stock market nearly six times its current level.Musk also has to deliver 20 million Tesla electric vehicles to the market over 10 years

This is just like telling your idiot kid “If you get all A’s, we can go to disneyland”. It’ll shut them up for a while and you know it’s a safe bet you won’t ever have to pay out.