-You can now eat snacks while in a vehicle, it says that you couldn't eat while inside a vehicle (however, you can).
I've had this glitch many times and this is how to fix it and get your car back:
1.Take note of the missing car and leave your garage.
2.Once you can, call your mechanic and have him deliver said missing car.
3.Once he delivers it, leave GTA:Online and rejoin it.(DO NOT RE-ENTER YOUR GARAGE)
4.Check your garage, your car should now appear again.
ONLY HAVE THE MISSING CAR OUTSIDE OF YOUR GARAGE, LEAVE THE OTHERS IN. DO NOT RE-ENTER YOUR GARAGE UNTIL YOU HAVE LEFT WITH YOUR MISSING CAR OUTSIDE OF YOUR GARAGE WITH YOU.
-4x4 and AWD info:
9F Cabrio 20/80
Police Rancher XL(Snowy) 30/70
Rancher XL 30/70
Sandking XL 10/90
*No idea what the "Winky" is but it is in the handling.dat, but its not the Weeny.