| American International Automobile Dealers | Plug-in Hybrid Buses Attract Energy-Minded Officials |
| American Public Power Association (APPA) | Special Utility Programs, Plug-In Partners |
| AutoWeek | Ford unveils flexible fuel hybrid Escape; plug-in hybrids pushed by coalition |
| BusinessWeek Online | Giving Hybrids A Real Jolt |
| Cal Cars | All About Plug-in Hybrids (PHEVs) |
| Christian Science Monitor | Hybrids? Some opt to go all-electric |
| Christian Science Monitor | Plug-in hybrids: a here-and-now alternative |
| Earth & Sky: Human World Radio Series | Interview with Joseph Romm, author of The Car and Fuel of the Future |
| Electric Power Research Institute (EPRI) | The Plug-in Hybrid Electric Vehicle: Today’s car for tomorrow’s technology |
| Electric Power Research Institute (EPRI) | EPRI Journal – The Plug-In Hybrid Vehicle Beyond Gasoline |
| EV World | Major Plug-In Hybrid Incentive Program Initiated By Austin, TX |
| Green Car Congress | ZESTFUL: Prototype plug-in fuel cell hybrid |
| Green Car Congress | Austin, Texas, Kicks Off Major Campaign for Plug-In Hybrids |
| IEEE, Spectrum Online | The Smart Hybrid |
| Institute for the Analysis of Global Security | Plug-in Hybrid Vehicles |
| Institute for the Analysis of Global Security | Plug-in hybrid electric HUMVEE for the U.S. military |
| Rainforest Action Network | Automotive News: Who’s getting juiced about plug-in hybrids |
| San Francisco Chronicle | Electric car aficionados favor a hybrid that you plug in overnight |
| Science Technology Quarterly | Why the Future is Hybrid |
| SoulTek.com | Gasoline electric hybrid plug-in cars |
| The Auto Channel | Next Generation Rechargeable Hybrid Cars Gaining Wider Support |
| Wikipedia | Hybrid Vehicle |
| World Changing | Plug-in hybrid prototype |