For a good example of how fast a real bike can accelerate, try this.

A friend of mine has the non-turbo version, and once tested it on the autobahn while on a german visit. He hit over 210 MPH, but had to slow down to a mere 150 or so when he noticed the front tyre smoking...

They are absolutely insanely fast. Over 150HP from less than 1000cc, probably 200+ for a turbo-ed one. Very light, totally ridiculous acceleration. You wouldn't get me on one for any money.

pca