| Title | Source | Date |
|---|---|---|
| Science panel approves water, energy conservation bills | Earth News | July 16, 2008 |
| COMMITTEE APPROVES BILLS ADVANCING WATER CONSERVATION, COMMERCIAL HYBRID TRUCKS | Committee on Science and Technology | July 15, 2008 |
| House Subcommittee Examines the Application of Hybrid Tech to Medium & Heavy Duty Trucks | IEEE USA | June 9, 2008 |
