Drive through Britannia Roundabout this week and you'll see a billboard that Adelaide Airport refused to run. It says Stop the Chop, and it's aimed at the nearly 400 park lands trees the state wants to clear for its MotoGP street circuit.

File photo of the Adelaide Street Circuit and Victoria Park in the eastern park lands, seen from a helicopter in November 2024. Photo by Avatar5991 via Wikimedia Commons, CC BY-SA 4.0, resized.