I wonder if the rental car companies are going to exit Portland? If this is a consistent problem in the city, the liability of leaving a car unattended overnight may be prohibitive?
I knew some folks in Eugene, decades ago. Eugene was starting to get bad. They had a solution fir not getting busted windows. They just left heir car unlocked, and nothing more than a little spare change in the ashtray. Today they might find that someone had moved in overnight.