Conical surfaces can be interferometrically characterized using a locally spherical measurement wavefront. The ECU controls the automatic transmission such that, when the learning control is performed, a gear ratio becomes higher at a prescribed vehicle speed, than that when the learning control is not performed. The reproducing control information has an amount of information larger than that capable of being inserted into one information unit formed during transmission via the bus. The LED module is fixed on the mount board and surrounded by the annular trough. The present invention provides a composite chassis structure comprising a nonmetal mesh cover formed on one or more surfaces of the metal chassis to obtain additional thermal budget and human-friendly chassis surface. In some embodiments, mapping of destination address to router components may be based, at least in part, on traffic volumes associated with the mapped destination addresses.