The only way i know of would be to sell the shed and it's vehicles, then buy them again.

This obviously based on the Giants Erlengrad map and is a work in progress (WIP) while it is usable it has a long way to go before it's even close to being a completed map. All the vehicles and machine sheds on the main farm (HOF1) are usable but all other sheds and vehicles around the map that should be usable, are not. This includes what appears to be a second farm. All the mod maps i have tried so far have been (WIP) What happened to the days of FS when maps were released at least close to being complete, if not completed? While this map has potential, more so than the others i have tried, i will not rate this until it is if ever, close to completion. I won't be using it right now either, it's too much of an eyesore, especially the roads and dirt/gravel tracks. Also on some of the dirt/gravel tracks you would think you were riding your tractor over the back of a humpbacked camel. Rough and not yet ready but better than many of these (WIP) maps.