[QUOTE="Theo"] Counts on fingers ........ takes shoes off..... OK if I don't buy any batteries I'l l be ahead in ...umm.... about 20 years and a day. K extra to recoup cost based on Prius cost over Camry. No idea of when you have to replace the batteries or their cost, but I'll bet it's not 20 years, or cheap. Here we go. They cost 00 now and 00 next year, but will last forever. How long does the battery last in the Prius, and how much will it cost to replace?[/QUOTE] All true and no argument with what i snipped for brevity as well...but... <shrug> the dangerous assumption is that price rises for fuel will be steady and will take a long time to increase 10fold - both of those assumptions are on shaky grounds. We could just as easily be paying a litre in 10 years as </body>.80(small increases at inflation rate) or 3.00(increase slightly above inflationie one price jump plus inflation). I would suggest the price of juice in 10 years time is likely to be well above but lower than - in that scenario petrol only and/or poor mpg vehicles will devalue very quickly. Note the REAL cost of petrol fell between the mid 80's and mid 90's and only rose quite slowly until the early 2000s when India and China massively increased their consumption - hence the you have to look at the devaluation rates that occurred to gas guzzlers in the late 70's early 80's and apply that to anything that isn't a fuel miser (hybrid or not) JL