Up above is a shot of Roo Trimble, architecture metalworker and RISD ID graduate, and his self-welded aluminum car frame. Trimble is building the car to compete in the One Gallon Challenge, a competition to design, build and drive a vehicle from Greenfield, Massachusetts to Boston's City Hall on a single gallon of gas.

Event organizer Jory Squibb...said the message he hopes the One Gallon Challenge sends is that 100-mile-per-gallon cars are not impossible to build. The technology is there, he said; all that's needed "are gutsy entrepreneurs and gutsy buyers."

The One Gallon Challenge begins this Thursday as part of Boston GreenFest, a community event focusing on ways to reduce our environmental impact.

Click here to see Trimble's extensive documentation of his car, the Roopod, being built.

via boston dot com