A new Structure has been added call Subway. This is a normal Building like all others that can be Unlocked and Claimed etc. But if you click on a Subway while standing at a Grid beside it you will get a special option called 'Take Shortcut'. This allows you to go into the Tunnels and go very directly to another Subway. Clicking the option brings up a list of all of the other Subways and the Energy required. The Energy used is almost 1/3 less than Running to the location. You will be taken to one of the Grids around the destination Subway. If there is no free space at the destination the action will not complete.