It's only in the last couple of years that I've been won over to hybrid vehicles and am still learning. I do however have a question to all you knowledgeable people out there. What are the advantages, if any, of having a 'plug in' hybrid rather than the type that charge themselves? As I see it, if you own a plug in hybrid you have the cost of installation of a charging point and then once the batteries are flat you have the cost of dragging around dead weight. With a self charger at least the ba