Google Project Manager interview questions

I had to go 4 rounds of phone interview and was called on site. Be prepared to play with fire. The questions were very open ended and completely case based.

Had two different phone interviews. First interviewer was prompt and asked typical product management questions. I was able to answer all questions properly. Then after couple of weeks second phone interview took place. This time, interviewer was 10 minutes late, never apologized and was arrogant. He also asked typical product management questions like what Google products you can design differently, what non Google product you use most and why, if given a team of software engineers, what product will you design, etc.