Elon Musk promises to make Tesla great again. For now investors are buying it

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.

​ 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. Read More Breaking News, Latest News and Videos | CNN