1. A vehicle system comprising: a controller including a driver identification fusion module programmed to receive an individual confidence level from each of a plurality of identification modules, each individual confidence level indicating a likelihood that a driver of a vehicle is a particular person, wherein the driver identification fusion module is programmed to aggregate the individual confidence levels received from the plurality of identification modules and output an aggregated confidence level signal representing an identity of the driver based at least in part on the individual confidence levels received from the plurality of identification modules, and wherein the controller further includes a prediction module programmed to determine a common setting with regard to at least two known drivers, and when the aggregate confidence level is below a predetermined threshold, the prediction module is programmed to output a signal to the driver identification fusion module identifying the common setting and wherein the controller controls at least one vehicle subsystem according to the common setting.