In the future World demographic changes will certainly be dramatic.

Rockefeller University mathematical biologist Joel Cohen says it is likely that by 2050 the majority of the 9 billion people in the World will live in urban areas of the Earth, and will have a significantly higher average age than people today.

The mainstream trend in automotive efficiency is the rise of electric vehicles powered through a collector system by electricity from off-vehicle sources, self-contained with a battery, solar panels or a generator to convert fuel to electricity.