First Minor I drove was a S2. Yes it was slow but not slow in the way that a JCB or tractor would be slow.
My guess is that (Apart from in cities) Australia, being a much larger country, with fewer people, enjoys less congested roads. As to road manners, who are we in the UK to judge

?
Some of the biggest dozers are the drivers of moderns, out for a drive in the country, crawling along, with their eyes anywhere but on the road

. If you want to really look at the scenery stop. The first time I went to Austria, I picked up a hire car from the airport (First time in a LHD and first time driving on the right!!) and set off. I hit the mountains in what is called the "German corner" and I soon decided to stop before I caused an accident. The scenery just took by breath away and I decided I had to make a choice; drive or look at the scenery.
Then there are the sunny evening cyclists, who think its OK to ride a bike whilst over the limit

. Came accross one lot, dawdling along, three abreast, right accross a B road

. As a keen cyclist, this sort of thing dismays me, as it tends to bring cycling into disrepute. Some of the evening strollers have also to be watched.
To be fair, I think that most classic owners
do take their brains with them when they do out for a drive in the country.