I read somewhere in the last two days their last quarter sales were somewhere around 10,500 units. So 55,000 would in line with that quarterly production rate.
The more mind-share electric cars get, the bigger the electric car market will be. So this isn't a "Watch out", it is more "Tesla is very happy that electric cars are getting more support from automakers."
Is this a typo, or are they really selling this few cars? Must be the SF bay area bubble, I see a Model S all the time!