{HEAD ~ Still another object} of {TAIL ~ this invention} is to provide a visual display of an internal combustion engines intake manifold vacuum to the driver of the automobile so that he will be aware of the effect of his driving habits on fuel economy 
of
{ HEAD ~ Still another object } of { TAIL ~ this invention } is to provide a visual display of an internal combustion engines intake manifold vacuum to the driver of the automobile so that he will be aware of the effect of his driving habits on fuel economy
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