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This week at TreeHugger: Mix some scooter engines, a lot of time, and some bubbly thinking and you get a DIY car project that makes 100 mpg a reality. In Toronto, community artists turn dead cars into vegetative centerpieces for city streets. A custom Harley job gives a chopper the power of electricity—and a biodiesel sidecar generator to boot. And a Portland man brings the charge to the drag racing track with his electric '76 Ford Fiesta.

[TreeHugger's Perspective Shift roundup appears every Wednesday]