I have been looking at a map of the Sylmar area again. The Smith family started their canvas immediately east of the #5 Golden Gate Freeway at Encinitas and Roxford. At that location directly across that highway (on the west) is a large body of water (unnamed on the map). It appears to have a man made boundary entirely around it. And then to the north west there is about 6 water segments that are labelled VanNorman Lake. Are there any locals on here that could clarify more about these water spots ? I am wondering if there would be access to dump a car there ??? That could explain the disappearance of Gavin's Mercedes and I wonder if LE has searched these areas ? When the cell phone hit the water, it would have stopped working ... thus explaining the last ping area.
I don't know, it looks like there is a fence around it, and a canal as well. It looks like a water treatment plant to me. There is definitely a guard shack at the entrance. There also looks like there is a boat ramp, or at least a road that leads into the water that could be used as a boat ramp, even though I doubt it is used for that.
I am thinking it probably isn't easy to get in there.