The entire basketball community was left in shock after NBA superstar LeBron James' eldest son, Bronny, suffered a cardiac arrest on Monday. The incident took place when the 18-year-old Bronny was training with his University of Southern California team-mates on Monday in Los Angeles. While Bronny's news came as a shock for many, Twitter owner Elon Musk had a very different take on it. Taking to Twitter, the CEO of Tesla and SpaceX stated that a vaccine (which can possibly the COVID-19 vaccine) might be the reason why the young basketball player suffered a cardiac arrest.