Abstract: A device may include a trailer frame with a mast coupled to the trailer frame, the mast including a first sub-mast coupled to the trailer frame and a second sub-mast extendably coupled with the first sub-mast. An electronic device may be mounted at a first device platform coupled to the second sub-mast. A solar panel array may be coupled to a solar-panel-array (SPA) mast, and include a first sub-panel and a second sub-panel, at least one of the first and the second sub-panel being hingedly coupled to the SPA mast. A rotation mechanism may be coupled with the SPA mast including a rotation stop and a rotation limiter. An actuator may pneumatically or electronically controlling the solar panel array between an extended position and a retracted position. The device may further include a display and dynamically changeable content on the display.