Google Project Manager interview questions

Got a call at an inconvenient hour (7pm), phone connection was really bad (why don't they simply use Google Hangouts?) so it was difficult to hear the interviewer. The scheduler was very nice and accommodating however. Did feel very impersonal but that's fine.

Met 4 people in the morning, 1 over lunch and was invited back to the afternoon session to meet 2 more people. If you get invited back after lunch it means you have done reasonably well. If you do well during your final 2 interviews you will be presented to the hiring committee in a week or two (completely different people than the ones you interviewed with - they just read the feedback). The committee makes the final call and if you pass you then need to find a team in Google to work with as a PM. The people I wet with were all very nice and asked some interesting questions. I have read enough about Google PM interviews to know what to expect. The Engineering guy I met in the afternoon asked me to explain the most difficult technical challenge I faced and how I overcame it. In the end I got the thumbs down for the committee - no reason given which is very frustrating considering I put in weeks of preparation. With Google you can generally apply again after a year, but I move on.... maybe in my next life :-)