Some will go bankrupt, others will show up. Maybe I don’t really get much about economics, but auto parts are something that will always be in demand, which means we just can’t end up in a situation where there’s nothing to buy anywhere. Right now there are tons of manufacturers and suppliers, like this online store
https://bumperstock.com/collections/2019-2025-dodge-ram-2500... . A good selection of aftermarket bumpers and related stuff. And I’m sure it’s the same for literally any car part.