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.
An add-on is a software extension that adds extra features to a program. It may extend certain functions within the program, add new items to the program's interface, or give the program additional capabilities. For example, Mozilla Firefox, a popular Web browser, supports add-ons such as the Google toolbar, ad blockers, and Web developer tools.