A collapsible protective cover for the trunk of a motor vehicle that extends from the trunk and therebeyond to protect an individual from environmental elements while accessing the trunk. An atomizer lance may be mounted within the nozzle, having a discharge orifice at the outlet end of the nozzle, for supplying a reducing agent to the overfire air to reduce NOx emissions. The method further includes receiving the trailer identification signal on-board the vehicle, associating the trailer identification signal with the vehicle, transmitting the trailer identification signal to a remote processor and receiving the trailer identification signal at the remote processor. The tip end of the sleeve guide includes at least one tooth that embeds in the glenoid bone and holds the sleeve guide in position. The inner ring includes one or more cams or pawls, which engage the end of the antenna when in the locked or engaged position.