Is it lateral thinking or 45-degree thinking to paint a huge retroreflective A on the side of each ambulance?

Is it lateral thinking or 45-degree thinking to paint a huge retroreflective A on the side of each ambulance?
The foregoing posting appeared on Joe Clark’s personal Weblog on 2004.07.08 19:50. This presentation was designed for printing and omits components that make sense only onscreen. https://blog.fawny.org/2004/07/08/now-thats-reflective/