I'm very confused by that photo. The description says "The tunnel is wide enough to fit three buses side by side." But either the worker standing in the tunnel

I'm very confused by that photo. The description says "The tunnel is wide enough to fit three buses side by side." But either the worker standing in the tunnel is huuuge, or that tunnel clearly can't fit three buses side by side. Maybe what went wrong is that they read the internal diameter of the tunnel (7.2m) and compared with the width of a bus (~2.5m for a New Routemaster) and forgot that busses are not 2 dimensional line segments.