Triffids or trams?
The poster has something of the air of a 1950s sci-fi film. A warning of alien invasion. Triffids, Tripods, Martians. The same sense of unreality accompanies the arrival of Edinburgh's trams. For a long time they've been out there somewhere, not quite believed in. Not that I've seen one in action yet. The testing must be happening during the day when I'm incarcerated in the office.