I took my friends out for a spin, and in the commotion I forgot to release the parking brake. I took it out onto the road and accelerated to at least 60 before one of my friends noticed it and told me to pull over! I had heard the beeping, but thought it was one of the other myriad beeps that this car emits. I posted this situation awhile back and someone replied saying that the manual actually claims that driving around with the P-brake on a little bit can help to "brake it in" I don't know how that is achieved or why it's necessary, but all carmakers know that from time to time we forget to disengage the brake, so I doubt that they make a brake that can be destroyed from one mishap. Your car'll be fine.