Madman basically posted exactly what I thought when I saw the pictures:
How is it supposed to maneuver? Two big fans for keeping it off the ground are all well and good, but even when they first made Orca's, they still had the tail fan (used to help maneuver and stabilise the craft). To go 175MPH, this would have to be nose-down at such a massive degree, there'd be no way of stopping it anytime soon.
And there's the other factor, stopping.
It's an awesome concept, but lots more smaller propeller's in area's of control over two main ones making it look like a wanna Chinook would've been better planned out.
In it's current state, all it will do is go up in the air, and the rider would have no accurate control over it going forwards only, it'll pitch to the sides.
Also, if the rider overtips to the left or right, he's gonna go forward with a nice amount of velocity and eventually plunge head-first into the ground.
If they had the fans either side of the bike with a tail stabiliser, it'd probably work better, but lose the sleek bike-esque look.
I'm also wondering what the minimum RPM for actually hovering is, it'd need to idle at this speed or the underside's gonna foot you a bill in road repairs.