A car travels from point \(A\) to point \(B\) at a speed of 60 km/h, and then from point \(B\) to point \(C\) at a speed of 80 km/h. The distance from \(A\) to \(B\) is 120 km, and the distance from \(B\) to \(C\) is 160 km. If the car returns from \(C\) to \(A\) along the same route, what is the average speed of the car for the entire trip? Let's think step by step and output the final answer within \boxed{}.
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