I don't have a clue!
That is zero reason to say it won't have a use though since I, like you, have done zero research on the subject. People with millions to throw around have decided it is worth a punt.
Great. Well done them for trying something different.
The whole of human history is full of "idiots" trying and retrying stupid ideas.
Imagine if the innovators had given up on helicopters after the first ones didn't work.