Transfer Carts – Towed. These Transfer Carts are not powered. The cart is designed to be pulled or towed by wPerfect Steerable Transfer Carth, forklift (of adequate capacity) or behind another powered transfer cart. A transfer cart of this type pulled by a wPerfect Steerable Transfer Carth can be a cost-effective alternative to a powered transfer cart (on rail) to move loads along a fixed rail path.