Abstract: The present invention provides a media flow control system, by which it is possible to describe flow of applications operated in a plurality of media and to facilitate unification of flows of each of media and preparation and change of the flows. A flow common to all media is described in a common flow definition 111, and in case it is to define different flows for each of media as not definable by the common flow, the flows are described in an individual definition for each of media using a media identifier. In case there is an individual flow definition in a flow definition 11, a flow conversion program 12 for each of media converts the common flow definition 111 and the individual flow definition 112 to flow definitions for each of media and stores them in flow definition storage units 131 to 133.

Abstract: In order to effectively cool an underfloor part, such as a transmission or a rear differential, and improve the aerodynamic conditions of the rear wheels, a front under member serving as a bottom of a front part of the vehicle is formed with left and right air passages for discharging inside air in the front part of the vehicle toward the rear wheels, and a middle air passage for contracting an outside underfloor air stream coming from the front of the vehicle, and directing the underfloor air stream along the center line of the vehicle.