Add Rolling Equipment or Cargo to train flatbed in ME

[Skyspin]

Static trucks, tanks,and cargo cannot be set on a flatbed without it still be showing sitting on the ground. A pre-unload view that would place the equipment properly in a natural elevated position is needed.

Of course this would greatly enhance missions if trains could carry equipment and show that properly too. Since trains are not visual to all in multiplayer and conform to way point rules in the ME, this fix would be awesome too.