The Cadillac Sixteen was a prototype of a stylish and high performance automobile first presented by Cadillac in 2003.
The vehicle was equipped with a 32-valve V16 concept engine displacing 13.6cc/liters and was mated to a four-speed electronically controlled automatic transmission. The engine featured fuel-saving Displacement on Demand technology, debuting in 2004 on some 2005 GM models, which shuts down half of the cylinders during most driving conditions and automatically and seamlessly reactivates them for more demanding conditions, such as brisk acceleration or load hauling when the driver needs the engine’s full power. The engine was said to produce 1000 hp (750 kW) and 1000 ft·lbf (1350 N·m) of torque using no form of forced induction.
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