Pretty much this. The US will now end up with an automotive ecosystem (including fun things like ambulances, firetrucks, buses, etc) where everything is built as cheaply and dangerously as possibly profitable (see: Pinto et al). Sure, the autos we build here aren’t going to be able to be sold anywhere with a functioning regulatory body, but that’s OK because we managed to save $20 on each car we build by not having to include pesky things like airbags or a steering column that won’t impale you in a crash or a body that won’t telescope into you and crush you.