After 20 years in limbo, director Gus Van Sant was granted rights to begin work on his newest project "Don't Worry, He Won't Get Far On Foot". Starring Joaquin Phoenix and Jonah Hill, it tells the true story of Portland based quadriplegic cartoonist John Callahan. Today on The Treatment, Van Sant tells Elvis about his meticulous casting of comedic actors and how close friend Robin Williams purchased rights to this story 20 years ago and planned to star in it himself before his passing.