A wagering game system and its operations are described herein. The large diameter tubular section is provided on the outer peripheral surface with a plurality of projecting portions that extend from a connecting part between both of the sections to a side wall of vehicle body engagement annular recess in an axial direction of the large diameter tubular section and are separated from one another in a peripheral direction of the large diameter tubular section. The vehicle is steered by controlling the operation and direction of each motor. A group of IQ samples for the length of 12 or 51 GSM frames are collected. A MEMS assembly constructed according to a process of the present invention is also disclosed.