Imagine that my car's brakes go out and I have to take it in to a mechanic.

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Question:

Imagine that my car's brakes go out and I have to take it in to a mechanic. In so doing, I am using the mechanic as a means. Similarly, the mechanic seems to be using me (a customer) as a means to make a living. According to Kant's formula of humanity, is it morally wrong to take one's car in for repair and/or be an auto mechanic? Explain.