Blue, that looks similar to the old Malvern Star mopeds from the 1950s. I never could understand why anyone bought them: you needed a bike licence, they had to be registered as motorcycles, and their performance and convenience was woeful even compared with the ubiquitous BSA Bantam, which with its regrettable 3 speed gearbox, was a pain in the backside too. Now the Super Bantam was a different kettle of fish, but I only ever saw one of those.
It seems remarkable that Victoria ended up with the most tolerant attitude to powered bicycles: it is traditionally just about the most restrictive state.