It does prove it. Here's what the police could have done instead. Arrest the driver for "felony reckless driving". Have the car impounded for the night.

It does prove it. Here's what the police could have done instead. Arrest the driver for "felony reckless driving". Have the car impounded for the night. Drive the passenger to her place. Give her written instructions on how to reclaim her vehicle the next day. There. You've made the roads safer. You've made the people safer. And you haven't stolen someone's property. And you know what, yes, you should get eventually your gun back if it's loaned out and used to shoot someone (provided you didn't loan it out for the purpose of shooting someone). The law doesn't have "some problems". It is a problem.