Roi-des-Belges ("King of the Belgians") or tulip phaeton was a car body style used on luxury motor vehicles in the early 1900s.
It was a double phaeton with exaggerated bulges "suggestive of a tulip".
[1][2] The rear bulges accommodated two corner seats like tub armchairs which were accessed from the rear by a central door with a small fold-down seat.
[a] The Roi-des-Belges style began with a 1901 40 hp Panhard et Levassor with a Rothschild body commissioned by Leopold II of Belgium, Roi des Belges.
[3] The style and the name Roi-des-Belges were used on many makes of the time, including Mototri Contal, Packard, Rolls-Royce Silver Ghost, Spyker,[4] and Renault[5] and by other coachwork builders.