I think it would be amazing if vehicles had an inventory that allowed for carrying certain objects like Ammo Crates.
Think of this: Drive a truck over to an ammo depot, have a simple option in the action menu to load a crate into the truck. Then drive the truck to a cargo plane, helicopter, etc and unload it then load into the aircraft. That would allow you to then drop off said ammo crate and/or other object anywhere you want. Think of the possibilities!