Sustainability

2013 Toyota Avalon adds a pricey hybrid option

The prototype bike tire that never goes flat

The future of urban transport is Toyota's Ha:mo

China builds a great green city

This solar concept house is a transformer

Chinese electric car revolution running on half a battery

Audi shelves R8 e-tron electric car project

Exagon Furtive eGT a super sexy electric luxury supercar

Green roofs will be worth $7 billion by 2017

Report: Algae biofuels not yet sustainable