Well, Plane Mates got some old-school use yesterday . . . massive lightening storm (with heavy rain) left our plane and several others stuck on field after landing because ramp was closed. After waiting a couple hours during storm, decision was made to deboard plane via Plane-Mate. Rolled them up to plane - 4L first and then also 2L - and took us to Concourse D . . . where we had to board a mobile lounge to get to terminal (or connecting passengers could stay in concourse, where they likely waited for their flight to be cancelled).