Bugatti Veyron with me in it: 500 bhp/tonne
Ducati Panigale with me on it: 696 bhp/tonne (curious number!)
That's 139% of the P:W ratio of a Veyron (just imagine what we could do if we could keep the front wheel down!)
*calculated with my 185lbs in the saddle plus 18 pounds of gas and...