Had a job interview yesterday, do you think I still stand a chance?

[karaoke girl]

Yesterday, I went for a job interview for a marketing research company and the interviewer seemed really happy when he saw me. All throughout the interview, he was really pleasant and friendly. However, at some point in time, he asked me about my availabilities and I told him that I could work full-time during the rest of my summer holiday but I might have only two days available when university starts again in September. Then he said he might want someone who could work more hours and said that he would keep my resume on file. Then I told him that I could try to condense my schedule as much as possible. At this point, I thought I lost the job although we did talk some more. On my way out, he asked me where I live. Why would he be interested in this if he isn't going to consider me any further? So my question is, because this is a marketing research/intelligence firm that conducts surveys, observational research, focus group interviews, and the like; could it be possible that he was just trying to gauge my reaction to rejection in order to see if I would show my true colours towards him and the receptionists (to see if I was pretending to be nice during the interview and whether or not I have sportsmanship) when I knew that I didn't have to work with them or ever have to see them again? I saw him looking back when I said bye to the receptionists on my way out.

Bear in mind, they stated on the job advertisement that they wanted to hire someone to work part-time. So am I thinking too much or is what I said before actually possible? Has anything similar (any kind of test or anything along the lines) ever happened to any of you and in the end, you still ended up getting hired?