This is a good use for the old battery packs but it’s not like you can just park the derelict car in your garage to power your home.
These packs will need to be processed and then resold as battery storage banks. This also ignores all the pollution created from producing these cars in the first place along with the pollution created from recycling the car only for them to be treated like disposable junk and tossed into the garbage after a couple years.
Our tariffs aren’t there to protect local brands they protect every foreign brand in the US too which make up 2/3 of the market.