We've driven around Australia, how about we drive around the world?'And with this one fanciful remark, the seeds were sown for what would become a worldwide adventure for one Melbourne family.Fuelled by itchy feet and a profound desire to expand their family's horizons, after five years of meticulous planning and seemingly endless vaccinations, Danny and Sandra packed their two kids, Maddy and Raffy, into their 4WD and headed off on their 'Big Trip'.Over the next 360 d...