One of the articles says Dyson has no plans (or the money) to set up charging infrastructure and is looking for government money (i.e. taxpayers money) to fit 21kw charging points in people's homes, now 21kw is about 84 amps, and the total supply to most homes is 80 to 100 amps (with a supply company fuse to protect their cables). You really won't be able to have a shower or boil your kettle while car is charging LOL - I don't think supply companies have the money or the will to upgrade their infrastructure to give houses extra power, and the cables are not sized for all households to draw max current at same time (diversity factor), so it will be equivalent of Tesla power wall in the house to level out the demand on the supply cables.
Dyson also says their car won't be cheap (which is a given for Dyson stuff, their hand driers are best part of £2grand each) what he does not say is if it will be held together with flimsy plastic tags that break when you try to open a cover to fix the car).