Great video and product especially if you could use it to get to inaccessible breaks, have a shoulder injury or want to get a lot of waves! I gather it is a battery pack attached to the back of the board with a propeller mounted up the mast so anyone could use it on their own board and foil. It was only a matter of time and I'm sure we are going to see more coming.
It would be good hear more details about it in terms of battery life, speed and cost.

Pretty sure the guy who was riding this has made these himself, sourcing the components and building from scratch,

I have heard that off the shelf e-Foils are around 8-10k, so this will keep the numbers down IMO,

The guys building them are really switched on??