In terms of trickle down, as soon as repair cost of complex components > scrap value of car, it's sayonara. With more complex vehicles and expensive battery replacements, it's coming sooner for many late model cars. Edit: ironically, shorter car-life will be worse for the environment as of the energy and material and scrapping cost of having to make them again, sooner)
This will create stricture upon travel and those who keep simple, reliable transport in some form of loophole in future rules will remain unaffected.
For the rest:
https://www.youtube.com/watch?v=6NbCNA0mAtM
Unless this kind of stuff happens first:
https://www.youtube.com/watch?v=2xgB1ep7Iog
https://www.youtube.com/watch?v=0XZbFBDzz5A