How do aboriginals get around the land?

Walk!!!!

Before Europeans went to Australia, there were no horses, camels, elephants. So they had to walk ( Go Walkabout). Even they could not ride a kangaroo.

In modern Australia, they do use and drive cars etc.,

Aboriginal Australians are though to be the nearest living relative to the Stone Age Man.

They are a ubique ethnic group , that came about by isolation on an island continent, and had none or very little contact with other ethnic groups, so did not develop in a Eurasian way.