A family of composite fabrics is disclosed, such fabrics comprising a relatively thick textile substrate or base to which is attached a sheer fabric, and a method for making same. Invitational content is delivered with a user interface element that, upon selection, transmits a forwarding request to the content delivery server. In another exemplary embodiment, pressurized service air is used to charge or partially charge the trailer reservoir. The voltage conversion circuit is connected to the voltage selection circuit to receive the output voltage signal and the control signal and to convert the voltage value of the output voltage into the work voltage value according to the control signal to thereby drive the heat dissipating fan.