I wonder what would happen if you somehow managed to find what coffee shop the hiring manager was working from that day and sat down next to them striking up a conversation. Obviously most of the ways you could do that are super creepy if not illegal, but then so is most of what FB and crew make.
Your comment reminds me of an awkward story: I worked at a company once where we were having trouble with Apple's AppStore review. The app was delisted and we were losing money daily. It was so bad the CEO came in and led a meeting to brainstorm what to do--all wild suggestions welcome, and worker-bee me got to be a fly on the wall. One of the VP-level execs mentioned in this meeting that he happened to know some breakfast or coffee shop where Tim Cook can sometimes be found before work. Well, the CEO loved this, and for a brief moment, "Physically accost Tim Cook in Palo Alto" was one of the leading candidates to solve our AppStore problem.