The black shell-shaped cars that glide atop the Omnimover
track in Disney
's Haunted Mansion ride that allow the passenger to see only what is directly ahead.
According to Chef Mayhem at doombuggies.com, a doom buggy is "a black carriage that can hold up to three passengers and is equipped with high fidelity stereo speakers that broadcast audio received through a digital signal."
A ghost appeared between my friend and I in our doom buggy car in the Haunted Mansion!