Here are a couple links on hybrid cars and the like:http://ludens.cl/philo/electric.htmlhttp://www.motorists.com/ma/1100027274.htmlHybrid cars are an improvement and a step in what most would consider "the right direction." However, they are not as eco friendly as what they appear on the surface. If you are really concerned about lowering pollutants, there are better things to start with. 1. Reduced use of power plants burning crude oil (e.g. large ocean boats). Large expensive transportation vehicles are not turned over as quickly as cars, therefore the emissions technology is very much outda