Fiat was recently named the lowest CO2-producing automaker in Europe. One reason if the brand's collection of small cars, some with alternative powertrains. Buried in an article about Fiat's low-CO2 win, reader Justin C. noticed that Fiat is readying a new version of its Grande Punto, one that can use methane for clean forward motion. Carpages says that the methane-petrol dual fuel system Grande Punto is supposed to be on sale by the end of this year. Other Fiat models that have this system include the Doblò, Doblò Cargo, Multipla, Panda and the Panda Van. Fiat says the Natural Power system is excellent for many Fiat users, especially trade customers. Fiat also offers a T-Jet version of the Grande Punto that gets 35 mpg on the combined EU cycle and emits 155 grams of CO2 per km. Thanks to Justin C. for the tip!