A shilly-car includes a main frame module with a rear-wheel tube and a main-frame tube, a front connecting tube and a swing module. The system uses illumination with R, G, B light from two different light sources for each color. By establishing an even distribution of dual-functionality devices, the user can reach any device without use of dedicated repeater stations. Each of the plurality of flight deck display devices is coupled to receive selected ones of the terminal procedure image rendering display commands and is operable, in response thereto, to render a terminal procedure image representative of a portion of the airport terminal procedure that is normally illustrated on the terminal procedure chart. The system further includes the portable activity monitoring device including a housing having a physical size and shape that is adapted to couple to the user’s body, a sensor to generate sensor data, and communication circuitry to receive physiologic data which is based on the user weight data, and processing circuitry to calculate activity data using the sensor data and physiologic data.