That Bhp isnt so far off, Just look at the Hp jumps so far, 400Bhp was a hell of alot for a car in the 90s, Know you can get 662Bhp in 2012 for 65k, and the soon to be 1300Bhp+ Tuatara, not far off.
The base model Lamborghini gets 700bhp, Up from 580 10 years ago, Manufakturs are putting 580Bhp im family Estatse cars, 400bhp in cars the size of an Elise, Power is going up, but so is more advancements in technology.
Some people drive 2000bhp as daily drivers, but still, no more then 100bhp is needed for the road, but thats not the point...i guess.
Thas why i always thought certain cars had too much of a Bhp boost for there model range.
Ferrari 458 570Bhp
Ferrari 430 490Bhp
Ferrari 360 400Bhp
Ferrari 355 375Bhp
Ferrari 348 300Bhp
These ones inparticular, i thought there was too much of a Gap between the Hp levels of these serires of Ferraris, afer the 360. Same with the Porsche Turbo Series.