Militant EV driver!
Actually long distance is done using high voltage DC. There are lines from coast to coast in the US and across most of Russia using this. High frequency is the opposite - the higher the frequency, the higher the losses in cable (high frequency AC is otherwise known as RF, radio frequency).A point I have made in a posting some time ago. A global grid may not be workable though due to cable losses.
I seem to remember that cable losses are minimised if the power is transmitted at a higher frequency, but that then presents it's own problems.
There must be a knowledgeable electrical engineer on here to advise.