A vehicle air drag reduction system is provided for mounting on the rearward facing surface of a vehicle, and in particular a truck trailer, that provides improved efficiency. Exemplary embodiments provide methods for assembling wearable automatic injection devices for subcutaneously injecting a therapeutic agent into a patient’s body at controlled rates. For example, notification may be provided to the sender by placing an item in a to-do bar for the sender that corresponds to the electronic mail message. In some embodiments, the main reactor includes hydroxide shuttles, such as Cu ion and Ag ion. The same concept is used to provide the same advantage for raceway base coupling elements that can be used to join raceway components with gaps therebetween. The compounds of the present invention are potent inhibitors of MAP kinases, preferably p38 kinase.