So I finally discovered what is making out cars disappear people
and no, it's not a glitch
it's actually something we should have realized on our own!
If you happen to drive around the block from your safe house, or anywhere near it for that matter, the game engine starts to draw vehicles in your general vicinity
got me so far? Well, we all know how the A.I. crash into anything in their way when they are trying to do something, and that thing maybe the car in your parking spot. If they manage to push your car, so much as a tire out of the boundry, and since you aren't there to witness it, the next time you re-load your game (perhaps due to a friend being injured on a date) your car will be gone.
How do I know this the cause, because this happens at two particular safe houses only
the two that I happen to be near quite often
and never at any other, have I lost a single car
and just today, I was just passing house #2, to see my front car, my comet
half way out of the rectangle and my NOose hummer dead in the middle. I got out to fix this, when I noticed the back of the truck was smash in on the rear bumper on the driver's side (side of the traffic) and then noticed my comet also had damage on the rear from the truck
and of course I have car density turned up pretty high so at this spot there was a traffic jam as usual. So, there we have it...my theory.