听力原文：W: I haard you' ye sold your car, haven't you? M: Yes. W: Why did you sell it? M: It was giving me too much trouble. I was spending so much money on it. W: What was wrong with your old car? M: The engine needs many repairs and the wheels were giving trouble now and then. W: Is the new car good? M: Yes, It' s newer, more comfortable, and it hasn' t given me any trouble at all. When I set off, 1' m quite sure that I' Il be able to get to the other end safely. W: I hope the new car can make you satisfied. M: Thank you ! Why did the man sell his old car?