Do not confuse the Nissan Leaf with this because this concept comes from the Shanghai Automotive Industry Corporation. The original name of the concept vehicle is Ye Zi which means ‘leaf’ and this concept probably gathers energy for mobility from the surrounding environment. Amazingly, the Ye Zi isn’t just a leaf in the name; the concept vehicle is shaped like a leaf too. Interestingly SAIC Leaf isn’t a zero emission vehicle but a negative emission automobile and SAIC will have to explain that bit in detail. The car body is itself made of metal-organic framework that can absorb CO2 and water to generate an electric current and oxygen.

A great concept announced at this year’s NAIAS in Detroit, Cadillac Converj is one of those green coupes that will make it into production in the next few years. And although we know most of the details, the Converj is going to feature a 16 kW lithium ion battery that will propel it for 40 miles and a 1.4 liter four cylinder engine to recharge whenever needed. Although for now General Motors is not ready to tell that it has a green light, our sources reported that in 2012 we’d be able to get behind the wheel for a “clean” drive. [via motortrend]