Feedback Needed on Travel Idea

Ok travel buffs. We just found the ultimate travel itinerary. 18 weeks, 13 countries from London to New York by bus (the long way 'round).

Oz Bus - London to New York

Also intriguing is the London to Sydney trip which probably fits us best even though its only a mere 13 weeks.

So now we need some feedback. We think this would be incredible but we want to hear feedback from others.

Is anybody interested besides us?

Our thoughts.

First, 18 weeks on a bus sounds tough. Second, 18 weeks off work, also tough. But that would cover your travel desires for a good few years...and there was mention of camping so apparently we'd not be in the bus all-day-every-day. I guess situations like these define "leaves of absence". (Lots of people in Europe take extended leaves from work to travel, do charity work, or what ever their hearts desire. I think as Americans we get set on the American-dream-track and there's no chance/thought of derailing for most of us. After a monumental, fulfilling and exciting trip like this, some of us might even be ready to settle down.... ;)