Despite Exxon Mobil Corp.'s well-publicized stance in support of fossil fuels, the oil giant said on Tuesday that it is sponsoring a program to bring a zero-emission electric vehicle to Baltimore. The car, called the Maya 300, is a partnership between the oil company and electric-vehicle maker Electrovaya. Exxon is providing parts for the Electrovaya's lithium-ion battery. The Maya 300 is slated to be available for sale in 2011, but visitors to the Maryland Science Center can test drive it for free, beginning on Tuesday, on a track inside the building. Full story here.