Short-term, maybe there's a correction.
Long-term, where do you list your car when you need to sell it? Either carsales.com.au or drive.com.au - it's a virtual duopoly
Carsales.com.au - 44th most popular website in Australia
Drive.com.au - 96th most popular website in Australia
And don't forget that Carsales has a much larger network of websites, which you can see here: http://www.carpoint.com.au/carsales-network/directory.html