Quote:
Originally Posted by rbrowning
I think you benefit from 3 factors:
1, you are going slower which may help your engine into a more efficient operating speed.
2, the big truck punches a big hole in the air for you reducing how hard your car has to work to go down the road.
3, drivers of big trucks sit up high and can see further down the road and they tend to maintain a smoother speed.
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#3 especially! I drive behind trucks because at a 2-3 second distance, it is usually safer. AND of course better MPG...