Community participant predictions

Due to increasing population density, increasing number of cars, and crumbling nature of the MBTA, a new highway (Route 2X) is run between Route 2 near Alewife Station in Cambridge and the McGrath overpass near Union Square in Somerville.
(source: LuQ. To see all of his predictions, click here.)

(image source: LuQ)

Other predictions

36 billion gallons of biofuels sold in the United States, up from 4.7 billion gallons in 2007.
(source: Schirber, "Power of the future: a timeline to energy independence" in LiveScience)