A bike like that would have to be ridden very carefully to 1) not do a wheelie and flip over, and 2) not torque steer into a ditch. It would make driving an old [link|http://www.pistonheads.com/doc.asp?c=103&i=8887|Porsche 911] (notorious for "[link|http://groups-beta.google.com/group/rec.autos.driving/browse_frm/thread/2b2b4041224fa77a/32f4106b4f970f52?lnk=st&q=lift+throttle+oversteer&rnum=8&hl=en#32f4106b4f970f52|lift-throttle oversteer]") look like driving a pedal car.
Yeah, it's 4 times as powerful as your car. HP is just torque times RPM (times a unit conversion factor). On a power-to-weight basis it's probably closer to 25 (700 HP/~ 500 # versus 170 HP/3000 #). It used to be sports cars were ~ 10 #/HP. That bike is around 1. !
Cheers,
Scott.