BMW Z1 Video Shows How The Roadster With Vertical Sliding Doors Came To Be

Explaining the Sport on Instagram: "One of the most striking innovations ever seen on a production car, the BMW Z1’s vertically sliding doors are a masterpiece of 1980s engineering creativity. Instead of swinging outward like conventional doors, each door retracts straight down into the body sills, disappearing completely beneath the car’s side panels. Operated either manually or by an electric motor, this mechanism not only created a futuristic aesthetic but also served a functional purpose — a