what happened?... pulling away from a red light. I hear a pop.... then the engine revs freely... not connected to wheels.... what could have happend... looking at the car at the house at first then will be sending it to the porsche dealer.. thankfully my father works at the dealer so it shouldnt be too exspensive... no fluids on the ground where it happend, oil level is fine, engine still revs normal... tramsisson still shifts... no bolts on the ground.. what could have happened????