Wait time in an empty parking lot shouldn't be the deterrent for not committing crimes with your car. What you are talking about has nothing to do with the suggestion at hand. If you want to stiffen penalties for doing crimes with your own car / leaving cars randomly about then make a separate thread suggestion.
Automating the system could still have the penalties you even with your suggestions so I am really at a loss as to what your entire post has to do with this suggestion.
And there reason why an officer should help (or automate it) is because you're playing a video game and people don't want to sit in an empty parking lot for over an hour waiting to get their imaginary car out of an imaginary impound lot. Even in real life they would have some attendant at said impound lot and it would take probably a few minutes unless it was extremely busy.
Just for the record my character has done 0 crimes (outside of illegal parking), so do not try to make this some sort of criminals trying to get away with shit. I just rather not waste an extreme amount of time because I had to log out of the game when my car was parked at the bank.
Also, I suggested a time window for top priority for a single cop. You guys should really learn to read.