TriGem,
Just glad that neither you nor the public were injured in that type of speed! I think you have to be very lucky:
http://www.nhtsa.dot.gov/people/injury/enforce/speedlaws501/toc/caspeed.pdf
If you read the >=100mph section you will find that they could have impounded your vehicle for 6 months as well. (Starts pg 29)
Tell your dad asap... don't let that fester or your dad will wonder about any other things you may or may not have done.
Best of luck to you, join your local Porsche club and take it to the track!