Many issues - the debate on BBC yesterday was still locked into actually owning the car.
Currently the e-car parc has car clubs as highest % of 'owners' and car club fleets are practically 100% LEV, with much of this hybrid or pure battery.
Car clubs can ensure that batteries are changed/recycled by a regulated regime with the economies of scale, and the critical maintenance of the battery & control systems is correctly delivered.
Modern high efficiency batteries tend to have low internal resistance, which means that a short circuiy can deliver a very high instantaneous current - rechargeable NiCd D cells can deliver over 1000 Amps, and this can set fire to battery lights. Wrongly set-up Vauxhall Zafiras can self immolate.
So with e-cars, the official promotion might be better directed to offering a credit for using car club cars, rather than a £3500 bung towards buying one, with the prediction of supply being unable to match demand.
Longer term too, the car club/car hire customers will be beneficial to the car makers. They won't require showrooms, or special offers, nor a need to stock a diverse range of colours and specification. Planned fleet renewal can include a production line for reuse/recycling, and a steady delivery of new vehicles with minimal requirement to have vast numbers of cars in storage, to cover variations in sales.