Disappearing car door technology not yet widely adopted

This promotional video promotes a car door that slides under the car instead of opening outwards. The terribleness of the idea wedded to the "upper middle-class England in the 1980s" marketing gives it an almost vicious quality, as if intentionally mocking the unmoored techno-meritocratic fantasies of the Thatcher era. The car of Hyacinth Bucket's dreams.

The design saw mass-production with the BMW Z1 coupe, however, and was apparently mechanically reliable enough. It appears the licensor's website at disappearing-car-door.com is now dead.