To start with nature may not make the car so heavy that only 1% of the energy is used in moving the driver, while 99% is used for moving the car itself. It would probably make the car with materials such as carbon fibres which can reduce the weight by two-thirds.
Nature would probably make the process of creating the car simple and resource efficient.
A car made with carbon fibre will require 5 to 20 body parts instead of steel-based cars that require 200 to 400. The body parts would fit together with glues instead of welds. They would be light in weight and therefore easy to manoeuvre during production.
Nature will surely make it run on renewable energy and would design a system that utilises most of the energy available. It may use electric propulsion, which converts 90% energy and uses no energy when a vehicle is idling or coasting and even at low speeds, provides high torque. A motor that uses electricity to accelerate a car can also act as a generator that recovers electricity by deceleration. Or better still, nature may use a fuel cell.
Most of us would have done the ‘electrolysis’ experiment in schools. When you send the electric current through water in a test tube, it splits water into bubbles of hydrogen and oxygen. A fuel cell simply does the same thing backwards. It uses a thin, platinum-dusted plastic membrane to combine oxygen (typically supplied as air) and hydrogen to form electricity and water. Nature would use this electricity to run the car.
Finally, nature would make sure any waste from the car would become food for someone else. The emission from a fuel cell based car will be in the form of water/water vapour, which can be used as drinking water. Submariners and astronauts drink fuel cell's by-product water.
Amory Lovins and his team at the Rocky Mountain Institute struggled several years to design such a car, which they rightly named as ‘hypercar’. They gave it as a gift to the world. Any automobile manufacturer can use the technology for free. And some, like Toyota and Volkswagen, are beginning to.
Natural Capitalism, A Book By Paul Hawken, Amory Lovins and L Hunter Lovins