Edited sentence: It is arguably one of the best looking cars that Lamborghini have ever made.The 1999 Diablo GT was dubbed the fastest production car in the world; its newer design and engine (which ultimately influenced the restyling changes for the 6.0 Diablo) were the most technically advanced of any Diablo yet:.improved chassis and suspension.new Lamborghini V12, 6 litre engine.new body design.reduced weight.wider front track