The answer is decentralisation. The question is "why is there a fuel,traffic,house and land price problem".
There is a problem because everything associated with work, finance, health, sport, etc is crowded into the cities. This requires, in most cases, people to travel long distances daily to use or access those services as not everyone can live on their doorstep. Tomorrow I will travel 250km, to visit a medical specialist because there is no local one available. If I lived in a city suburb I would still have to travel many kilometers through traffic to visit and would have trouble parking when I got there.
When I'm on the road I will pass trucks taking produce from my area to the city markets, I will also see some bringing the same produce back to the local supermarket.
I will be joined in the traffic some people travelling to work from as far as 60km away and coming in the other direction there will be some travelling to work as well. I'm thinking of those living on the Gold Coast but working in Brisbane and those living in Brisbane but working on the Gold Coast. When I get to Brisbane I will get into traffic congested by those who live on the north side but work on the south side and vice versa.
I will wonder how everyone I see at the medical centre got to work, how far they travelled and how they got there. If they drove I will wonder how and where they parked. If I visit my sister in Brisbane I may have trouble parking near her house. The houses on either side host 11 cars between them with most being parked on the street. They both have uni aged children who must have a car each as it is "the only way they can get to uni".
The time has come to put the services and industry where the people are and not to keep trying to get the people to them. It's time for people to find a job as close to their home as they can or better still work from home.