I got ya beat for most car alarms in parking lot!
I go through the parking garage, (That may be a different category from parking lots) in 2nd, @ about 1000-1200 rpm, one foot on brake, one on gas, making an obnoxious hummmmm, and the last time, I got 7. . I am a parking lot vulture, and must have the closest parking spot to the front door. . that way, everyone can see that big bad Billy Goat! As far as the windows down thing, if they dont like the exhaust sound, at lights, I usually have my 1200 watt system cranking out some good tunes, but the yip yap people dont like it. Oh well, they must have mistaken me for someone who cares!
-Chris-