A vehicle system comprising: a plurality of input shafts (13; 113; 213); a plurality of output shafts (15; 117; 215); a torque producer (12, 240) coupled to the plurality of input shafts; a transmission wherein each output gear of the transmission is coupled to one of the plurality of output shafts; a power train; a pump motor, which is coupled to the transmission by an output shaft, the output shaft being a part of one of the plurality of output shafts (15; 117; 215); a plurality of hydraulic devices (14; 114; 214) configured to be operable as vane pumps in a first mode of operation and configured to be operable as hydraulic couplings to couple the plurality of input shafts (13; 113; 213) with the plurality of output shafts (15; 117; 215) in a second mode of operation, wherein the plurality of hydraulic devices are simultaneously operable as the hydraulic couplings and the vane pumps; and one or more accessories in fluid communication with the plurality of hydraulic devices (14; 114; 214) and configured to receive a hydraulic fluid pumped from one or more the plurality of hydraulic devices when operating as the vane pumps, wherein each of the input shafts is coupled to one of the plurality of hydraulic devices and each of the output shafts extends from the plurality of hydraulic devices and is coupled to the remainder of the power train so that drive torque is transferred from the power train through the transmission along the output shaft to the pump motor, and wherein the hydraulic devices (14; 114; 214) are arranged in parallel, the vehicle system further comprising: a clutch and brake assembly (242a, 242b) disposed between each of the plurality of hydraulic devices and each output gear, each clutch and brake assembly is configured to isolate an associated output gear from an associated hydraulic device to allow the associated hydraulic device to operate as one of the vane pumps. a plurality of input shafts (13; 113; 213); a plurality of output shafts (15; 117; 215); a torque producer (12, 240) coupled to the plurality of input shafts; a transmission wherein each output gear of the transmission is coupled to one of the plurality of output shafts; a power train; a pump motor, which is coupled to the transmission by an output shaft, the output shaft being a part of one of the plurality of output shafts (15; 117; 215); a plurality of hydraulic devices (14; 114; 214) configured to be operable as vane pumps in a first mode of operation and configured to be operable as hydraulic couplings to couple the plurality of input shafts (13; 113; 213) with the plurality of output shafts (15; 117; 215) in a second mode of operation, wherein the plurality of hydraulic devices are simultaneously operable as the hydraulic couplings and the vane pumps; and one or more accessories in fluid communication with the plurality of hydraulic devices (14; 114; 214) and configured to receive a hydraulic fluid pumped from one or more the plurality of hydraulic devices when operating as the vane pumps, wherein each of the input shafts is coupled to one of the plurality of hydraulic devices and each of the output shafts extends from the plurality of hydraulic devices and is coupled to the remainder of the power train so that drive torque is transferred from the power train through the transmission along the output shaft to the pump motor, and wherein the hydraulic devices (14; 114; 214) are arranged in parallel, the vehicle system further comprising: a clutch and brake assembly (242a, 242b) disposed between each of the plurality of hydraulic devices and each output gear, each clutch and brake assembly is configured to isolate an associated output gear from an associated hydraulic device to allow the associated hydraulic device to operate as one of the vane pumps.