Seriously? You think people are prepared to lose money to make a political point?
Folks' politics and their beliefs about the world are all tied up together.
Even Mitt Romney claims to believe it, but Texas Governor Rick Perry drives a Volt. When I mention that Volts are outselling the original Prius by over 2-to-1, conservatives argue that it's purely government buyers who are forced to buy them by President Obama.
Try explaining to Romney backers that the backlog on the Tesla Model S is in the billions and that their candidate is wrong about the company.
If you exceed the margin requirements because the stock price rises i.e. you owe more than you have capital and credit on hand, your brokerage may force you to "cover" or buy the underlying stock at the current market price. They do this to "call in" your debt to them. This is referred to as a "margin call."
When a lot of short margin calls happen all at once, this is called a "short squeeze" because it squeezes more short sellers into covering by buying the stock at the current market price, which in turn causes the price to rise and squeeze other investors.
In the case of Tesla, the stock is not very liquid. At the current volume, it would take thirty days for all short investors to find enough shares to cover their debts. This means a short squeeze can result in dramatic hikes in the stock price and even small hikes in the price can amplify short seller losses.
PS: Err it looked like ALL the editors of the magazine had only good things to say about the car. I digress though seeing as to how it's a popularity contest in any case.