Caravans & Supply Trains

production, has a move of 2, can be captured, can only defend, 0 power. Special ability: Can perform a trade mission like the Great Merchant but only at about 10% effectiveness of the Great Merchant. Supply Train: Available with Construction, costs 50 production, has a move of 2, can be captured, can only defend, 0 power. Special ability: can hurry the production of the city it resides in by 25 production.
This mod adds two new units, the Caravan and the Supply Train. As best as I can tell, the AI does know how to produce and use these units. Stats follow: Caravan: Available with Currency, costs 50