Only under magical unicorn fantasy accounting. Under the same accounting standards every other car maker uses (GAAP), Tesla still loses money on each car.
From Tesla's own financial report:
"excluding regulatory credit revenue, automotive gross margin improved by ~200bp (compared to a decrease of 125bp on a GAAP basis). [emphasis added]
1) Tesla's GAAP gross margin was (positive) 14.5% for the most recent quarter [https://ir.tesla.com/static-files/1e70a30c-20a7-48b3-a1f6-69...]
2) Breaking out GAAP and non-GAAP figures is totally standard and commonplace among publicly traded companies. Take a look at Ford's Q2 letter, for example, which has a whole page describing why they use Non-GAAP financial measures to supplement GAAP figures [https://s22.q4cdn.com/857684434/files/doc_financials/2019/q2...]