Jennifer Kent . Articles Working the system: 3 ways planners can defy the odds to promote good health for all of us Many of the chronic and costly diseases Australians face are related to how we live in cities. The speed of modern life clashes with poorly designed urban areas. Three changes in how we live could derail the dream of the 30-minute city Sydney’s most recent metropolitan strategy, The Greater Sydney Plan, has the 30-minute city as its key aspiration. Why car sharing had a slow start in Australia - and how that's changing Car sharing is now an established transport option in most major Australian cities, but it’s faced its fair share of teething problems. Some of these are unique to Australia.