Tesla shares trade at record low over Musk's distraction with Twitter  

Electric car maker's stock has slumped more than 50% this year after CEO's purchase of the Twitter social media platform

Tesla is now trading at 30 times projected earnings, its lowest ever, amid risks attributed Elon Musk's foray into social media, and to falling demand in China, the world’s largest car market. File picture

Tesla shares are trading at their cheapest-ever level, as the electric-car maker’s stock slumps more than 50% this year.

Chief executive Elon Musk’s focus on his recent acquisition of Twitter is among a few headwinds the stock faces, with some bears saying that the world’s most valuable car maker should see more declines.