Let's assume that, at its hottest, my car burns fuel at 1800"C (a reasonable guess), and that cold air comes in at 5"C. Let's say that the engine in my car has a (typical) operating efficiency of 25%. My car (Toyota Corolla) burns 7.5 L of gasoline per 100 km. How much would it burn (in L/100km) if the engine had the ideal efficiency of a Carnot cycle operating between the two temperatures above? L/100km