If the Tesla feedback is right and what Elon said a few months ago in fox interview to be believed, Tesla will generate substantial positive cash flow once model x is being produced in big quantities. And..... They may generate gaap in black.
However, I now feel that may be Elon has no clue what gaap is and may be he doesn't care about it as he claims that he spends 80% of his time developing products, a thing I believe where he really belongs. I suggest he learns to ignore the kind of questions and go in full swing when it comes to tech and future and humanity.
I agree with Krugerrand that plans may simply have changed at Tesla. What change, you might ask? Notice that Elon talked about millions of cars by 2025 and multiple factories. The obvious implication is that the reinvestment needed to expand this quickly will be consuming excess cash generated by car sales. I see this as an honest statement, not a negative statement. Meanwhile, the value of the company (and stock) can keep on increasing as Tesla becomes a major automobile producer.