This has been ongoing, I could fill this with pictures of the final proposal but instead have a link;
Now this went from start to finish in about 6 weeks as I was spending too much time at work to actually get on with it.
Anyway, long story short, I won and the team in Australia wish to develop my design.
After a bit of a slow start they forwarded the CAD for solar panels, batteries etc as well as feedback from the whole team, both engineers and explorers.
It turns out the original brief had a few huge errors including the size of the wheels, this means that actually I can mount driver and passenger conventionally alongside each other to allow better visibility. Also the vehicle is now about 1500mm shorter and potentially much lighter.
Instead of developing the above vehicle I have started fresh, taking the ideas from the original that the team liked and dropping those they didn't. Also put more attention towards the aesthetics.
This is how it's looking now: