In integral utility assembly for an automotive vehicle includes a coolant reservoir and an air cleaner. The portable memory device may further comprise an interface component adapted to connect to a host computing device. An upper threshold level is determined and a lower threshold level is determined. Novel methods of utilization of the Conceptus Chamber with nonhuman and nonplacental species are taught. An external pressurized canister allows easier servicing or replacement of the pressurized canister as well as the ability to maintain the chamber in an un-pressurized condition, allowing non-HASMAT shipping. In one embodiment, the enclosed area is divided into a plurality of detection zones with at least one fire detector disposed at each detection zone.