That's likely true. The WSJ has been doing some investigative articles about Tesla -they aren't the success Musk paints them to be, and are really only making money from selling pollution credits.
He's very smug about improving the world, blah, blah, but by selling those pollution credits, nothing is being accomplished for the environment.
http://blogs.wsj.com/drivers-seat/2013/03/08/tesla-earns-40-million-selling-pollution-credits/
Tesla almost went broke on the Roadster, investors lost big bucks. Unlikely anyone over 40 or typical education will buy electric cars, even now, the Tesla sales are all driven by the highest income, highest education zip codes in the US.