That happened to me as well in another video that I plan to upload after work tonight. Two of my cars were in my garage, but thrown wherever. Every other car was someone else's, but with MY emblem on them. And they were floating and would shake violently when I got near them, until I would get launched across the garage.
Sometimes I could get close and try to enter them, but be denied access. It looked like it was breaking my hand in the process trying to open them as well.