Bike porn

It would still ride fine, just a small amount of trail. Bikes have existed with no trail and they work okay.
So maybe the designer knows more than you, they are just not contained by the limits of what a bicycle has to look like :-)

I'm not so sure, ed. I'm no expert, but it looks something like 80deg head tube angle and 0 rake. If that is true, with 700c wheels, the trail would be 59mm, which is fairly standard.

The top and down tubes appear to be adjustable which could alter the head tube angle.

The head tube looks as if it also has a pivot point.

The designer may be brighter than you though[t].

ooof!