Cargo only ferry points

The cargo only ferry point allows for cargo to be moved from point A to point B. This allows for the 

supply or removal of cargo from a completely cut off map area (with only a garage to start). It can be 

a one way or a two way system and it can be cargo specific or cargo size limited ferry point. Story wise 

it can be a island where logging takes place with a one way barge ship to connect with the mainland to 

remove the logs. It can be a helicopter pad or a local airstrip ect.