The pros and cons with the carmaker recycling the batteries
There are a some of 'pros and cons with car makers getting into battery recycling...
Battery tech is in a state of flux - even the basic chemistry isn't finalised.
There will be significant investment required in battery recycling - and yes different models from different vendors will have different ways to do it.... The R&D expense will be spread accross the vendors - making it less efficient.
This means that there is little incentive for manufacturers to standardise across the industry in recycling (if Elon gets Elons batteries, and GM get theirs)
There becomes no incentive to make batteries last longer.
Why bother have batteries last > 4 years if first owner sells on after the initial lease/buy.
Lockin might break the 2nd hand market - a perfectly good car might be recycled because to force the market sooner - but because the manufacturer wants the lithium. Manufactures can 'encourage' return of the vehicle by shortening the useful life of the hull and other parts. Recycling is not as efficient for the environment as reusing the veichle.
On the other hand,
it will be more convenient for the 'owner' or leaser - hand the keys to the dealership.
Leasing, rather than ownership might reduce the cost - not at the cost of profit for the manufacturer.
It might be better (for the customer) if the battery recycling is controlled further down the supply chain - mining companies perhaps?
Just thinking