There was a recent Guardian article about hybrid vehicles being a con. Whatever it tells you about hybrid vehicles, it says something important about measuring value over time.
The article says they a "con" for a number of reasons. Partly it points out that it depends on how the driver uses it (duh...yes). Partly it points out the growing size of vehicles meaning that they weigh more than years ago for the same class and there fore require more energy to move.
That demonstrates a problem with changing values and technology. Is a new digital TV really the same as the old analogue version, which could do far less. A modern computer has far more processing power that older models. Are they effectively he same product anymore?
