I think they'll remove the batteries, then junk the cars at junkyards. Or, the junkyards will create the processes for removing the batteries.
Y'all have to remember though, true auto enthusiasts and/or those who love the smell of gasoline are a very very small percentage of the population. 90% of the general public sees a car as a tool -- something to get them from point A to point B. And like a washing machine or refrigerator, once it breaks or seemingly gets too long in the tooth, it's thrown out and a newer model with more gizmos and features (i.e. "progress" in their eyes) is purchased, probably for less money than the last one was.
My neighbor across the street, a retired three-star US Navy admiral, just purchased a CPO 2023 C300 with 3,000 miles on it to replace his 2015 C300 with 60K miles on it. Not because the 2015 was unreliable or failing, but because it was too old and he wanted new gizmos. They did get an insane amount of money off of the $45-50K MSRP of the 2023 car from when it was new.