Something has got to change. Solar power has often been suggested as a solution to the power problem, and certainly solar panels have become much more efficient than in years past. Aside from the cost of deploying solar energy collectors throughout the world, there is still the problem of storage. Our biggest problem is not actually producing the power we need - it is storing it. More efficient production of power would make power cheaper, perhaps even making it free someday, but it would solve the problems with electronic trinkets that I mentioned.
Batteries are still too bulky for current needs.
Mass transit is a great idea, but it has the limitations of being relatively expensive to operate and inflexible for consumers, causing people in most parts of the US to avoid busses and trains in favor of personal automobiles. Even so, that is only people movement, and doesn't address the problems of merchandise or information. The future belongs to the person that can solve one or both of these problems. Make it happen. The world is waiting.