Hmm, some technical queries:
What does the cockpit do to headroom in the cabin? Looks like the `pilot's` legs are dangled over the owners head.
Where are the stairs to go UP to the cockpit? Not in the virtual interior.
Doesn't seem much room for fuel and ballast tanks in the `innovative design`. Wishful Thinking drive, perhaps?
If they build it we will come.
IF, being the operative word...
Too many of these flights of fancy being passed off as `in construction`.
Just because you've got a 3d design package and you watched `Stingray` and Thunderbird 4 torching metal away from a space rocket stuck under the sea doesn't make you a sub designer.