Vehicles being deleted

[xDaVIRUS 49]

I have my settings set to 30 days in database, yet i have people almost everyday saying a vehicle is gone, thought it was the case of them not locking it until my hemmt disapeared .. after i logged back online. Any idea what could be causing this? had vehicle for almost a month now.. and then its just gone. no sign of it being sold. and no sign of it in the database under my name..

[wik 12]

Probably exploded from spinning around during server loading.   Parking them facing exactly north, spaced away from other vehicles and buildables, and not on floors, seems to help.