Elon Musk, the CEO of Tesla (NASDAQ: TSLA), is no stranger to controversy. The billionaire is known for being opinionated and has been criticised on occasion over his remarks on COVID-19. But no matter what your views are of the man, there’s no doubt that his company, Tesla, is poised to change the world. From electric cars and clean energy, the company is pushing the boundaries to come up with innovative solutions for the planet. Tesla shares have been on a tear this year, surging by 66.3% year to date to an all-time high and pushing the market capitalisation of the company past US$1 trillion. The electric car company is not the first to hit the trillion-dollar mark. Who’s next in line and should investors start adding these names to their watchlists? Leaders of the band First off, let’s look at the companies that have already crossed the trillion-dollar threshold....