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Folder: Roundabouts 1 File  2 Folders          •  ~Bill R. WASHBURN  •  Bookmarks  •  Roundabouts     Roundabout Satellite Roundabout Webcams Pablo Päster calculates  http://www.autobloggreen.com/2007/04/24/pablo-paster-calculates-the-efficiency-gains-of-roundabouts-vs/