fuel economiser

Not a novel method of mounting loudspeakers but an audible aid to smoother (and therefore cheaper) motoring. While most things are `going decimal` it would appear that motoring costs are `going logarithmic` and any method of saving money on the road must be greeted with enthusiasm. This particular idea is aimed at the cost of acceleration (accelerating costs?). In other words, if you resisted the impulse to put your foot down quite so hard all of next week, _how much petrol will you save? How do you try it?