Thanks for your responses Laundress and Keven,
I am not able to respond in a timely manner. My monthly internet allowance of 12 Gigs has been exceeded and I am now operating on 64 kbps until the 25th. Though, I used to have 56 kbps dial up in a past life and this current speed seems a lot slower than that. I can't even properly download my mail at the moment - anyway, enough whingeing.
You are right with everything you say about there being lots of logistical problems in regards to car hire and distances. I was being a little tongue in cheek. When we hired a motorhome in Germany some years back we had to return it to the pick-up point. There was no service available where you could just take it from one end of the country to the other and drop it off, which I found bizarre. The cost of motor transport in Europe is pretty steep, which complicates things even more.
I love driving and for me to do the 2700 kilometers between Sydney and Cairns, in two and half days, is nothing. We do a lot of outback travel as well. Here in Australia there isn't much of a highway system. Most of our travel takes place on glorified country roads, which are extremely busy with heavy vehicle traffic. It is quite adventurous, but can also be very unnerving and dangerous. People in Europe and the US are spoilt in comparison.
Olav