Well, if you want the fastest car, buy the Swedish E85 Koenigsegg CCXR with 1018 bhp (806bhp with gasoline...):
http://www.koenigsegg.se/thecars/ccx.asp?ccx=3
http://www.forbes.com/forbeslife/vehicles/2007/09/06/cars-wait-long-forbeslife-cx_bh_0906cars.html
http://www.koenigsegg.se/thecars/ccx.asp?ccx=3
http://www.forbes.com/forbeslife/vehicles/2007/09/06/cars-wait-long-forbeslife-cx_bh_0906cars.html