It's been less than a year since Tesla (TSLA 9.82%) launched its luxurious Model S sedan amid a lot of skepticism. Since then, it has overcome various bear concerns, and the stock has tripled in just two months' time.

Is it too late to hop on the Tesla express? In the video below, our Rex Moore chats with Motley Fool co-founder and Chief Rule Breaker David Gardner about what investors should be doing at this point.