Right now ShuttleControllers add the collision component to the Grid Entity.

Adds Grids to the collision group.

Content.Shared/Physics/CollisionGroup.cs

@@ -1,5 +1,6 @@
 using System;
 using JetBrains.Annotations;
+using Robust.Shared.Map;
 
 namespace Content.Shared.Physics
 {
@@ -17,6 +18,8 @@ namespace Content.Shared.Physics
 		SmallImpassable = 1 <<  4, // 16 Things a smaller object - a cat, a crab - can't go through - a wall, but not a computer terminal or a table
         Clickable       = 1 <<  5, // 32 Temporary "dummy" layer to ensure that objects can still be clicked even if they don't collide with anything (you can't interact with objects that have no layer, including items)
 
+        MapGrid         = MapGridHelpers.CollisionGroup, // Map grids, like shuttles. This is the actual grid itself, not the walls or other entities connected to the grid.
+
         // 32 possible groups
         MobMask = Impassable | MobImpassable | VaultImpassable | SmallImpassable,
         AllMask = -1,