I exchanged a couple of email with them about cost. 150,000.00 euros.
If a fellow could come up with kite a little more hands on. I think something like this would be viable.
People say fuel cost is the least expense owning a boat but a penny saved.
How about just a large version like the kite surfers use.
I always figured I would run an engine till fuel got to expensive. Then I would go sail.
The best of both worlds?
SD
But it's green