Interesting. Do you have any good links that goes into the details of this?
I'm always interested in learning how to read financial sheets better. Its outside my field of computers, but I'd love to learn the skill. I've got a general idea of how GAAP works and other such cash-flow matters, but no official training in the subject.
EDIT: I did some searching... and it appears that Tesla was GAAP profitable in Q3 and Q4 2018, according to their quarterly filings. I'm very curious how and why you don't consider it GAAP. Is there something in the financial statement that is a red flag to you?