Ok, so I was barely born at the time, but I seem to remember back in the 70s, during the oil embargo, a number of cars were built and sold that got very good gas mileage - 40-50 miles per gallon, and I thought that for a good part of the 70s and maybe early 80s, that 40-50mpg cars (although small and weak and lame) were not uncommon. So, fast forward to today ... the press is going nuts, and people are buying up a lot of toyota and honda hybrids because they get 40-50 mpg ... So the question is, if they could do 40-50mpg in the 70s, without any of this wacko hybrid technology ... why does 20 more years of R&D, and the introduction of this hybrid system yield basically zero gains in efficiency over the non-hybrid economy cars made 25 years ago ? I really don't get it - I mean, what if you made a late 70s economy car into a hybrid - would it get 70-80mpg ? Any comments ?