A week or two ago Ally Carter made a bunch of videos that she was one of P Diddy's party favors. She mentioned that there are roads, intersections and tunnels underground in Los Angeles along with kids in cages.
A former Starbucks employee whose NDA has expired talk about how he worked at the secret underground Starbucks and how famous people in LA drive underground and don't have to wait in traffic. He mentions Seinfeld's specific regular order--Vanilla Latte, 2 shots. He claims the tunnels stop at LAX, dodger stadium, and a bunch of other places.
Steve M