Australia has it's own set of problems too, with distances being so vast between capitals, I imagine if you're not on the east cost you're not going to see any at all.

I did once wonder to myself "Are there non-english language travel youtube channels about Australia", so I searched my home town in Japanese, and sure enough there was! This Japanese guy was hitchiking from all the major cities, he would do so mostly from truck stops.

One thing I noticed was that, whilst a decent amount of people wanted to help, they were rarely going where he wanted to go, and so it could take him a day or two to find a ride.