The 2011 Audi Best Buddies Challenge will be held on Oct. 22 in Washington, D.C. A charity walk, run, and bike ride, the event is held to support  the creation of opportunities for friendship, employment and leadership training for people with intellectual and developmental disabilities. Audi, the biggest corporate sponsor of the event, hopes to exceed last year’s $1.2 million raised, extending its partnership with the organization for another three years as its title sponsor.