1- Who or what company would be willing to write an insurance policy on this thing?
Answer: Nobody
2- Who is going to buy this?
Answer: Jay Leno, for one...and anyone crazy enough to "need" it.
If you can't insure it, you can't ride it on public roads. I doubt that it would pass muster with the DOT but does it really matter? If you can afford the selling price, chances are that you could also build your own road or airstrip to ride it on.
As for this machine reaching 250MPH......not likely without any kind of aerodynamic bodywork. If you've ever been on a "naked" bike, getting above 125mph or so without some kind of bodywork to slice through the air, your hands (and the rest of you exposed to the airstream) become one helluva drag. Just hanging on at 125mph+ on an unfaired bike is a feat in itself. Steering precisely at that speed exposed to the air directly is NOT easy. It doesn't matter how many ponies the motor can put out....without bodywork you MIGHT see something like 150mph. COnsider the following:
On Sept. 13, 1948, Rollie Free rode the first Vincent HRD Black Lightning to a speed of 150.313 m.p.h. at Bonneville. Rollie's leathers tore from early runs at 147 mph, he discarded them and made a final, heroic attempt without jacket, pants, gloves, boots or helmet.
The bike was capable but the rider provided enough drag to prevent speeds in excess of 147mph. He had to ride practically NAKED to get above 150. If there was bodywork...read: WIND PROTECTION, he would have been even faster. 147mph TORE HIS LEATHERS....wrap your mind 'round that for a second.