On 22/05/2017 10:47 PM,jg62430@... [TramsDownUnder] wrote:
>

> Witnessed today during the Jetty Road track relay. What is going on? It took me a minute or two for me to work out what was going on.

>

> http://tdu.to/2017-05-22_Jetty_Rd_Puzzle__AJC.JPG

>

Is it some sort of heat seal for the plastic film?

Mal Rowe