Bullying GM over ventilators is classic Trump Organization modus operandi - 2020-03-30
GM really stepped up with a feasible plan to manufacture thousands of soon-to-be much-needed ventilators and for whatever reason (I'll speculate it's because CEO Mary Barra is a woman) Trump is arbitrarily jerking GM around on price, accusing them of acting unpatriotically, and weaponizing the Defense Production Act against GM for no apparent reason. The link above recounts how things got here.
Anyone who has ever dug through Trump Organization litigation will recognize the dance Trump is doing. He makes a deal, puffs it up in the press, goes back on the deal, and then creates a confusing media firestorm in hopes of renegotiating the deal.
Then he outspends the usually smaller contractor in court before they eventually accept the new price, unable to justify paying lawyers indefinitely. It's a vile routine that amounts to abuse of the courts. Trump is hardly the only one to do it, but there's never a time he doesn't do it. Some people think that this is what makes him a "good businessman," but it really just makes him a giant asshole.