A system for transmission of files, which files are generated by a first user at a first client station, which first client station is connected by a first computer network such as a Local Area Network to one or more local servers, which first server performs communication to a number of computer systems connected to the first LAN. A sequence S is transformed to generate a symbol interleaving sequence. By utilizing a lightweight base design to absorb a portion of the vacuum forces enables an overall light-weighting, design flexibility, and effective utilization of alternative vacuum absorbing capabilities on the container body. A signal adjuster transforms the measured vehicle states from a sensor coordinate system to a body coordinate system associated with the vehicle.