Status symbol. I’ve only seen these sorts of vehicles actually carrying something a single digit number of times. I’ve never seen one dirty.

Pick your poison:

* no gas

* no oil changes

* no annual emissions testing (if they do that in Oz)

* more than 1 second faster 0-60/0-100

* twice the towing capacity

* semi-automated trailer connecting (maneuvering the truck to the trailer)

* longer bed and more rear seat leg room

I think you read their comment backwards

It serves as an artificial, external extension to the length and girth of the male reproductive organ