May i add to this discussion the following:

Just been reading a blog of a family who as travelled around Australia, mainly stuck to the cost, only did a couple of inland trips, clocking up 45,000k in 450 days, and they still haven't done 90% of the more advanced 4wd tracks inland... Australia is a big continent, not a country, it takes in most of Europe… If you can only spare 3 months, don't bother shipping your car there and back, it will only make you want to come back and do it 'properly'!

We're taking 18-22 months to get from Melbourne to London, probably skipping Indonesia and instead spending more quality time in the countries we do visit, I agree with everyone else here… a year on the road is not a long time, unless you want to spend it driving all the time…

another 5 eggs worth
 

I spent 13 months goig to India and back via Italy, Greece, Turkey, Iran, Pakistan, I stayed 6 months in India. If I had the money I would of stayed longer in every country I went through.
So if you have the money take longer if not do as others have said and see less countries. You will see more in a way. If you only have a year then maybe turn back after 6 months or sell where ever you are at the end of 12 months.

Graeme

Hi Graham, how long ago did you do your trip?

Kai

I'm planning a world trip myself and from past experience if you've only got twelve months do less and see more.
Personally i'm not giving myself a limited time(3Yrs ish) but this is due to my own circumstances.
But i i think the whole beauty of travelling is MEETING the places you visit and i don't think you can d that by driving through them.
What ever you decide.
Good luck.