The article leads with these Key Points: --Tesla shares sank 8% on Tuesday and have now lost most of their gains that followed the election in November.

The article leads with these Key Points: --Tesla shares sank 8% on Tuesday and have now lost most of their gains that followed the election in November. --The stock has plunged 25% this year, while the Nasdaq is down just 1.5%. --Reuters reported on Monday that the company’s long-awaited upgrade of its partially automated driving system in China left owners unimpressed. $479 in Dec to $302 now but steadily dropping from $426, since Jan 20. I confess I am skeptical that "that the company’s long-awaited upgrade of its partially automated driving system in China left owners unimpressed." is a primary driver here.