HI All,

I am new to hybrids, and they are saving us money over our previous cars. I just got my wife a Toyota Prius and myself a Highlander. I love the idea of saving energy and a cleaner environment. It is awesome to pull up to a traffic light and have the gas engine shut off. I heard there are after market products that allow you to put the vehicles in an electric mode only. Does anyone have any information on these? Or if you can point me it this direction. Thanks