You know, most countries that have strike laws forbid this. In Spain, for instance, if the workers are on a strike, the company is forbidden to replace those positions in a strike. Neither with temporary, nor people from other places. And the company cannot fire them. Basically it’s a shackle, either you solve your strike or you are out of business.
Elon should build a factory in Spain. I really want to see how that works out.
It could work surprisingly well at some extent. I mean, Spaniards are hard labouring people and they put hours to work. But they also like to live the life (you know, paella, siesta and stuff). So the first couple of times it may come to pass, but things may hit the fan really quickly.
Also, cheap labour force and laws very favourable for the employer.