Abstract: A cab fairing for attaching to an associated truck cab includes a fairing panel having an attachment end; a hinge connected to the attachment end and configured to connect to the associated truck cab; and an actuator connected to the fairing panel that is configured to switch the fairing panel between a first coverage state and a second coverage state.
Abstract: An air spring having an airsleeve having a plurality of layers, where at least one layer of said airsleeve includes a rubber component that comprises a renewable filler.