If you’re using QBCore, then this is likely because that vehicle is blacklisted by default some vehicles such as helicopters and planes are deleted immediately after spawn.
it has shared public shared garage system. like we can shareour cars keys with our friend and the keys will stay with him untill car owners remove it…?
It doesn’t have a key system built in; but it supports most popular key scripts out of the box, and you can add any unsupported one yourself very easily. Some more details here: Integrations | JG Scripts Docs
Thank you for responding to this. I really appreciate the feedback this helps a lot. Your scripts are really good looking forward to your future projects!