An initial pulse current cycle is supplied to at least one through-hole via. The segments used to construct these frequency-optimized-contours are a series of concatenated polynomial segments, the independent variable t being time. The first two pilots are transmitted over two Orthogonal Frequency Division Multiplexing symbols via the first antenna. The vertical member has a first part of the vertical member attached to the outer circumferential portion of the in-wheel drive unit and a second part of the vertical member attached to the vehicle body to guide the in-wheel drive unit in the vehicle vertical direction.