Whatever you might think of Twitter, it's hard to watch Elon Musk clumsily flay it alive to "save it."
But siphoning cash from Tesla, Musk's only profitable company, just as serious competition is toppling its dominance, should concern Tesla's investors.
And given his obsession with Twitter, they may well ask: How far will Elon go to save Twitter at Tesla's expense?
How Musk could use Tesla to try and save TwitterMusk cobbled together his Twitter funding primarily by selling off a major chunk of his stock in Tesla and taking out huge loans.
Saving Twitter won't kill Tesla anytime soon, and Twitter might not survive unless it does, but Musk is draining Tesla's capacity to weather what could be its toughest challenges ahead.