Rivian is getting into the spooky spirit with a Ghostbusters-themed software update that transforms its EVs into a modern Ecto-1, complete with lights, sounds, and special characters.Along with the software, Rivian built a handful of Ecto-R1 vehicles, which take the elements from the Ecto-1 and bring them to life on the R1S.The over-the-air Ghostbusters update will roll out on October 9 and run through November 2.