Tesla has doubled its referral bonuses, offering $1,000 for referring buyers of Model 3 and Model Y, and $2,000 for Model S, Model X, or Cybertruck buyers. Each buyer also receives three months of free Supercharging and Full Self-Driving (Supervised). This move comes as Tesla aims to boost sales in the fourth quarter, especially with the potential loss of the $7,500 US tax credit for EVs in January, which may drive more customers to purchase sooner.