Huh? It would certainly be "adjudicating the acquisition of cars," which would be the better analogy. Some acquisitions of cars are legal (like when you buy a car), and some are illegal (like if you steal a car).

Sure, but try and prove you never crossed the median or went over the speed limit. Now add an environment where your passengers are pressured to report you if they suspect you may have violated a rule of the road, and you have the sex life of your typical college student.

If you get pulled over driving a friend's car and the cop asks you to prove that your friend loaned it to you, it's relatively parallel.