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This week at TreeHugger: The brainiacs at the Massachusetts Institute of Technology are putting their heads together at their Vehicle Design Summit this summer. Their goal is nothing shy of revolutionizing sustainable personal transport, starting with a modest goal of 500 mpg. Some big players are getting their handy greasy with biobutanol, a veggie fuel that could replace gasoline. More on how to improve your gas mileage. Hydrogen busses shuttle German World Cup fans (presumably drunken and rowdy—hopefully) around Berlin. MG, now the parent of the Smart Roadster, may be bringing the agile and efficient little thing over to American shores.

[TreeHugger's Perspective Shift roundup appears every Wednesday]