Looks pretty scary to me. I think wheel failure at 65mph would almost always be terminal. The leverage of that big wheel on a 6” mounting point, the least little bit of drag could cause it to wedge, lock-up and explosively break-up. I’ll stick with a hub and bearing in the middle of the wheel.
But when you go on your last ride, you will go looking good.
Need to see how it handles road construction, traffic bumps, entrance ramps, parking garages, parking lots. Straight smooth roads look good!