Reach Hybrid Milestones. The New York Times. 2009-03-11 [2009-03-28]. (原始内容存档于2021-06-12). United States Dept. of Energy 2007 Top 50 vehicles. [2012-06-17]
highway for "High Occupancy Vehicles" (aka HOV) so only certain vehicles were allowed to use it. Carpool (HOV) Lanes. HybridCars.com. 2010-07-08 [2012-02-27]
Information on hybrid vehicle history, hybrid vehicle technology and practical application of hybrid technology in a broad spectrum of vehicles. (页面存档备份,存于互联网档案馆)。