Most of us use cars to move around Melbourne. Car engines convert 15% of the energy available in their petrol to motion. The rest is heat, which is part of the reason cities are warmer than the countryside. Few want to ride engines. Engines push cars and together they are some 15 times heavier than drivers; so only one part of that 15% moves the driver; 14 move the car. Beyond that, energy is the energy required to make, maintain and dismantle cars after their dash is done. Still further is the energy to make the infrastructures cars drive in, and to repair the damage they cause us and to the environment. So, for urban commuting, the energetics of the car are very poor. And still we drive.
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