Though Tesla’s shares doubled over the past 12 months, they’ve had a tough run since the inauguration. Investors are waiting to see if Elon Musk can keep the company’s charmed run going.

In many ways, these have been tough days for Tesla. Falling sales. Squeezed profit margins. Proposed changes in US government policy that could cost the company billions.

Musk, who also runs SpaceX and a number of other companies, has been known to make big often exaggerated promises. For example, he once called the Hyperloop, which was never built, the "fifth mode of transport" and famously promised to take Tesla private in a Twitter post, saying he had secured financing that he didn't have.