1. Delaware court restored Musk's $56 billion 2018 pay package from Tesla. 2. Musk's options could be worth $120 billion due to stock price rise. 3. New shareholder-approved plan offers Musk up to $878 billion if targets met. 4. Tesla incorporated in Texas to prevent legal challenges against pay packages. 5. Musk threatened to leave Tesla if unsatisfied with compensation and voting power.