Short interest in TSLA has been steadily rising for months. It is now at 17.67M which is about 34.7% of the float (if the total of 50.9M of float is the current number – I do not know if it includes the recent stock issuance).

http://www.nasdaq.com/aspxcontent/shortinterests.aspx?symbol=TSLA&selected=TSLA

There are many bears out there and there are some serious reasons the electric revolution is not here yet, but good news about the Model S and / or the company (partnerships, other models etc.) could send the stock to new all time highs helped by scared bears. If one wants to gather some information against Tesla and other EVs / Li-ion, a good place to start is here

http://seekingalpha.com/author/john-petersen/articles

The guy (John Petersen) is smart and experienced. But nobody is perfect and he confounds the long term problems of electrification (non-ferrous metals scarcity – not Lithium, which represents a small fraction of the metals used in a Li-ion battery) and the huge challenge of manufacturing new discoveries (Tesla is just improving tested tech they had in the Roadster) with the particularity of Tesla. He even included it in a short portfolio amongst several Li-ion producers / innovators.