Maybe he could leverage it the other way. He could say that Tesla is willing to save the factory but the evil GM, who previously saw no value in the factory and was going to close it, now wants an outrageous price. Tesla should be able to get it for a fire sale price.
Corporations don't work that way. GM has already weathered bring called evil by Trump and politicians with the power to cause it trouble. A little name calling from Musk would not do anything.
