nissan leaf in factory

The Renault-Nissan Alliance, along with the United Nations Environment Program (UNEP), produced a two-minute video to coincide with the Rio+20 environmental conference that pitches the sister companies' advances in plug-in vehicle technology.

The video, which aired on CNBC and can be seen below, waxes poetic about how people "want cars that liberate them from fossil fuels" and reiterates Renault and Nissan's investment of $5 billion in battery-electric vehicle development. Among those interviewed in the video was a California resident that drives "on pure sunshine" because he uses solar power from his home's roof panels to charge up his Nissan Leaf.

Renault and Nissan are hoping such a pitch doesn't fall on deaf ears, at least here in the U.S. Earlier this month, Nissan reported that June sales of the Leaf dropped 69 percent from a year earlier to 535 units. Through the first six months of the year, Leaf sales fell 19 percent to 3,148 vehicles. Nissan has said sales will pick up once domestic production of the Leaf starts up at Nissan's Smyrna, Tennessee plant later this year.