Aaron, THANK YOU for posting this video up.  As I said before, it is just as important to recognize the positive ways to promote our hobby as it to comment on the things not to do.
Speaking solely as a SSP enthusiast, I think your trip down the track with the lights and siren on promotes a positive image of our hobby.  Who knows what interest you may have sparked for somebody watching?  You may have made a lifetime memory for a youngster who will come into the hobby later in life.  You may have caused an adult to reflect upon a time when he remembers seeing these cars patrolling the highways, and cause him to search for one now.  These are GREAT things, and it's far different than being a look-at-me moment where it's more about the owner than honoring the heritage behind these old police cars.
I also 
ran my SSP down the track back in 2009, and you will likely receive the same comments I did regarding the risk involved.  That's OK, cuz none of us want to see anything happen to that beautiful SSP of yours.  Glad to see you are enjoying the fruits of your labor.
