Doc Brown's garage was originally part of his mansion. Initially it served primarily as Doc's laboratory, but when the mansion burned down in 1962, the garage became a free-standing structure that was eventually built around as Riverside Drive became John F. Kennedy Drive; by 1985, it was adjacent to a Burger King restaurant. It served as Doc's home from that point on. When Marty McFly arrived in the past, they used it as a test bed for the DeLorean time machine and Doc built a demonstration model of downtown Hill Valley.