Everything I'm about to write is speculation on people we are allowed to sleuth or available through MSM or other public source.
I do not believe this story either, based on:
1. MR maybe, probably, in theory, has a serious attachment to his car and an aversion to allowing others to drive it.
2. CP had been in a very serious accident. He is the last person you would trust to drive your car.
3. MR maybe, probably, in theory, in my speculation, could have had sexual relations with KS in the past. . .and who lets their best friend go home with a hot girl who used to let them hit it, bro?
4. Nobody drops the owner of the car off at their house first and then proceeds to go somewhere else with the car, particularly if that place is just down the road.
5. LE searched MR's car and HIS HOUSE, which would lead one to believe they don't believe his story either.
6. MR's constant use of the word "we" in defiantly proclaiming "our innocence" and how "we didn't do anything".
So until information surfaces telling me otherwise, I say that anything CP did that night, MR did with him.