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GM Testing What Ecomodders already know: The Grille Block
I finished reading a short article at Automotive News about GM testing new grille blocks to improve fuel economy on their truck. Their twist is developing movable slats, something that many of us have thought about doing in our cars instead of non movable grille block. Well, here's the story link.
http://www.autonews.com/apps/pbcs.dl...302159901/1113
Last edited by markemmanuel; 02-15-2010 at 11:03 AM..
Reason: for clarity. i didn't write the article. i only read it. :p
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