Sneak a peek at the cute little zero-emissions cars that could one day be zipping around your neighborhood

The race is on to build a leaner, meaner and much, much greener car. And now the first team to do it will win up to $25 million.

Even as we green folk take steps to reduce our ecological impact – diverting waste through recycling and composting, energy-proofing our homes, buying local – environmentally minded travel is still a challenge.