When asked in interviews where I want to be in 5 years I regard it as a trick question. If you say, just as you have indicated in your response, anything that vaguely could be construed to mean you want the equivalent of the hiring managers job you are ****ed. My practiced answer is to say I would like to be given projects of a greater responsibility some years after being hired after having established a good reputation.
Once in an Amazon.com job interview I lost the job on the question which part of amazon do you want to work on - I tried to pick any product manager job I could think of that she wouldn't already be the product manager for and went with books and struck out. She wrote something down in her notebook and the rest of the interview went sour.
In my first ever summer job interview they asked me for some unknown reasons what my career aspirations were as I was interviewing for the stock boy job. And I said maybe ordering the inventory. And the third person on the panel got alarmed and said I wanted her job, I still got the job but she lobbied for me to be fired some months later and I was (although I did suck at the job too which didn't help).
Where I can agree with you and perhaps if I read your post again I would see you are trying to say this - if you appear in the interview to be so competent that you have upper management written on your forehead you will get the job. You just can't come out and indicate you want upper management overtlly.