pretty sure it can be (from hearsay recently) I dont feel like testing, but with a hotkey to set to send it to storage that should never happen. Maybe a timer for sending vehicles to storage is needed.
there is a timer. if your vehicle is not in your radar for longer than 10 min then its automatically spawned back to your storage
I think you are a bit confused. Spawned vehicles can't be looted (unless something changed), while vehicles in your inventory can be looted when you're killed.
Clarification please: the loot thats in your vehicle which is in your inventory can be looted? Or the actual vehicle can be taken from you as long as it's in your inventory?!?!