A suicide door is a car door hinged on the pillar rear to its placement: a front suicide door would be hinged to the B-Pillar (center) and a rear door to the C-Pillar (rear). Such doors were originally used on horse-drawn carriages,Anthony Bird & Francis Hutton-Stott, Lanchester Motorcars, A History, page 96, Cassell, London 1965 but they are rarely used on modern vehicles, due primarily to safety concerns. Although the term is common in the custom car trade, it is avoided by major automobile manufacturers in favor of terms such as "coach doors" (Rolls-Royce), "FlexDoors" (Opel) "freestyle doors" (Mazda), "rear access doors" (Saturn), and "rear-hinged doors".