Our goal is to create trucking advancements that deliver more savings to our customers and cleaner air. Weâre aiming to make our fleet 100% more energy efficient by 2015. This includes keeping 26 billion pounds of carbon dioxide out of the air between now and 2020.
add-on therapy. Any treatment given to bolster or enhance the effectiveness of a previous one, esp. when the first treatment proved not to be fully effective.
addendum, supplement, postscript(noun) textual matter that is added onto a publication; usually at the end. supplement, supplementation(noun) a quantity added (e.g. to make up for a deficiency) accessory, appurtenance, supplement, add-on(verb) a supplementary component that improves capability.