Floating gate structures are disclosed which have a base field coupled with the substrate and a narrow projection extending from the base away from the substrate. An ISMA media stream having an ISMA header and including contents as a payload is constituted, an IPMP tool list descriptor representing, as a tool required for processing of the contents, at least one tool selected from a group including an IPMP tool, an ISMA Cryp decryption tool, and a key management system tool is buried in the media stream, and the ISMA media stream is transmitted. Each of the spike supports carries a set of sharp hollow spikes that are aimed at and adapted to puncture and deflate the tire should the vehicle drive off in either the forward or the reverse direction. For instance, the system may increase efficiency of the wireless power transfer based on such parameters andor state information. A granular, light-transmissive, thermally insulating filler, such as silica aerogel, substantially fills the cells.