Spawning cars at 'static locations'

Can anyone tell me if there will be an issue when setting (to many) items as Mission Entity? I suppose it will though since we encounted this during testing of the train script when spawning multiple trains (LOTS of them) which where set as mission entity, BUT of course this could also related to the ‘native background’ (what the game does behind the screens) with the train script(s)

Although it still doesn’t seem ‘healthy’ to me to use vehicles as mission entity to much
since that will also be (partially?) synced to other players, so even on leaving it would
create a mess on the server eventually i suspect?