The origins of the Impala were first depicted in the comic mini-series "Supernatural: Origins", in which John Winchester takes ownership of the car from Mary's uncle after accidentally getting him killed during a hunt. However, fans responded negatively to this, as John is shown with the Impala in the teaser for the pilot episode, which is chronologically set before the comic series. Because of this, the comic was altered for the trade paperback version, with the Impala's true origins later being depicted in the series' fourth season. Having been sent back to 1973 by the angel Castiel, Dean convinces his father to purchase the Impala over a 1964 VW Van. The car's origins were further explored during the season five finale, in which a frame story surrounded the plot of the episode tracking the Impala's history from its manufacture, through several previous owners, up until the present day. According to Chuck Shurley, the brothers have "made it their own", and they are shown as kids sticking an army man into an ash tray that remains there (Sam), putting blocks into the heating vents (Dean) and carving their initials into the car. The Impala later proves important when seeing the old army man allows Sam to overpower Lucifer during the final confrontation. According to Chuck, as they have the Impala, the Winchesters never consider themselves truly homeless. In the seventh season, after two Leviathans go on a killing spree in an identical Impala, Sam and Dean are forced to put the car into storage and use various other cars as they are too identifiable with the Impala. Dean later pulls it out of storage to confront Dick and has the demon Meg crash it into Sucrocorp to create a distraction. Starting in season 8, Sam and Dean are once again using the Impala as their car. The Impala was stolen by the angel Gadreel while possessing Sam, once again forcing Dean to use a stolen car, but it was quickly recovered and proved instrumental in tracking down the rogue angel.