Earlier quoted context omitted.
Oil and gas companies have a far easier, and legal way to destroy Tesla: they could simply buy up its outstanding debt and call it in. That would immediately bankrupt Tesla. As it so happens, a number of the oil and gas companies have recognized that oil and gas are the past, and have transitioned to calling themselves "energy" companies and are spending billions on alternative energy industries.
> they could simply buy up its outstanding debt and call it in They could try to buy it up, and they might succeed, but they can't call in the debt willy-nilly before it matures.
Standard terms allow for debtholders to call in a debt before it matures if they have reason to believe the debtor will be unable to pay back the loan at the end of the term. With Tesla's long-standing liquidity concerns, it would be absolutely shocking (and could even constitute legal malpractice for the debtors' lawyers) if the debtors didn't have the right to call in the debt under such circumstances.