If you are able to take a buddy with you, then you don’t need to hide the spare set of keys.
They will drop you, naked, at the side of the road before driving 200 metres (or 2/10 mile) further up the road and parking.
Again, you must then walk naked to the car, then reward yourself by masturbating to orgasm right there in the open before getting back in.
Don’t continue until this task is complete.