Having a high horse power car has a certain brag rights but just how high are some of these that are out there? I saw some vids of some mod'd up cars that claim well over 1000hp

and they were on the streets. I claim BS but then again maybe I should keep my mouth shut until I know the facts.
Are there cars on the street with over 1000hp? What's the highest you have heard about? I would think anything that could take you from 0-60 in less then 4 seconds is plenty (and horse power is important but so is weight and handling) but then again I am old, feeble, and stupid...so what do I know.