According to Sky News:

The (UK) government is awarding four projects a share of £4.8m to develop and implement "Vehicle-to-Everything" (V2X) technology, which could also allow households and businesses to sell electricity from their vehicles back to the grid.

The idea is that electric car owners use low-tariff electricity to charge their EV batteries overnight and then use the power from their car either to power their home or to return electricity to the grid at a higher price than they downloaded it in the first place.

The Minister for affordability and skills Amanda Solloway said the prospect of families using electric vehicles to power their homes was "incredibly exciting" and added:

This is exactly the sort of ingenuity and creativity that makes the UK one of the world's most innovative nations.

Why not just put a battery in the house and charge that on low-tariff electricity, a bit like night storage heaters used to do before they were 'phased out', instead of having to buy a £50K car to get one? Clearly that's not an innovative enough solution...

Swedish Lutheran Minister, Greta Thunderberg, recently gave an innovative sermon (sponsored by Volvo) on the the imperative to buy EVs as a means to power your home. The idea being not to use them for driving at all, just leave them on the drive and sit in them now and then to enjoy the hum of the battery, like a kind of expensive garden shed.