the Gaon street light/wastebasket concept composts biodegradable waste and uses the methane by-product to power its light, saving energy and eliminating waste while lighting the streets.
but I'm not too sure if the Gaon can be turned into a real product. For starters, how much trash is needed to produce a decent amount of methane, and how long will it take before the trash produces the gas? And remember, only biodegradable waste will produce the methane, but in urban areas a large part of the waste comes in the form of plastic, glass and other non-biodegradable materials.
Interesting, I really like these conceptual green products. Unfortunately, I see gangs stuffing these things full of plastic water bottles so they can mug you under the cover of darkness. Me? I only mug under the cover of a dinosaur comforter. RAWR!