Interesting but not the same environment.
The level of traffic in the UK will not allow complacency

probably more traffic in Yorkshire than the whole of OZ
Like 40 million vehicles in UK in 1/32 of the space of Australia with less than 20 million
Cruising on our roads requires as much concentration in reading the speed of traffic ahead and behind as driving manually but without the need to use accelerator or brakes.
A single tap will alter speed up or down by 1 mph but a long tap will alter speed by 5mph. So 2 long taps gets you from 60 to 70 very quickly. A lot of thought and anticipation goes into successful cruise operation on academic free UK roads

and very stimulating for the grey cells