What are ways (other than downsizing cars) in which increased fuel economy can be achieved?

Question

and

List reasons why people buy SUVs and large trucks.

Thanks!

Answer 1

Increased fuel economy can be achieved by:
* increasing taxes on gasoline to encourage people to drive less
* insisting that cars be engineered to get better gas mileage
* exploring alternative energy sources that DO NOT use food crops
* greatly increasing public transportation

In my experience, most people by SUVs and large trucks to appear macho or keep up with their neighbors.

Answer 2

What do you mean by macho?

Answer 3

Check these definitions:

http://dictionary.reference.com/browse/macho

Answer 4

thanks

Answer 5

You're welcome.