No, I'm not talking about the new chili peppers song

(even though its a beauty!!!!)
After my end of year uni exams this year I want to go on a road trip!!! I was supposed to last year but no one got around to organising anything so it didnt happen... This year I'm starting early!!
I havent baught it up with the people I want to go with yet, but I will when I have a rough Idea of where to go and everything. I'm thinking of taking myself (derr.) and two friends (3 people + stuff seems to be good)
Ok, So I'm in Melbourne...
Where are a few places we could go!?
I was thinking like... Queensland maybe? I dunno... Something that will take a couple/few days on the road, and somewhere thats gonna be nice to stay for a week or two.
I really like places like Merimbula (just over the vic/nsw border [In nsw]) but thats only a 6-7 hour drive away... Not much of a road trip.
Anyway, any nice places/drives people can suggest? Or should I just stick to places that are within about 10 hours away?
(Lets just say I have 2 weeks to play with)