Disagree. PR means no local support. PR means city, particularly London, centred politics. That's already bad enough - look at HS2 which was supposed to be for the north, but has ended up being an upgrade between London and Birmingham only.
The fairest system is some sort of ranked choice, you can vote for the party you agree with most, without risking 'wasting' your vote and still get local representation.
When they've reached end of life for the car, they are still useful.
EVs require high energy density so they get replaced when they don't store enough energy for their weight. However for grid storage, weight doesn't really matter (at least not as much) so a battery with 80% of its original capacity is a good (and cheap) solution.
When the market is mature, it will good for car owners who need to replace their batteries because the old one still has value.