But the news came in the form of the 2013 C-MAX Energi, set for release in the U.S. in 2012, along its less-electrified sibling, the C-MAX hybrid. (By the way, Ford says the C-MAX Hybrid -- the one without a plug -- should beat the Ford Fusion hybrid's excellent 41 mpg.) That Ford's mystery plug-in turned out to be a C-MAX was a bit of a twist; plenty of industry observers long expected a plug-in variant on the Explorer. And after digging through the press releases we realize there's still a lot that we don't know about this car. How big is the battery? How far can it travel in electric mode before the gas engine fires up? Will the gas engine kick in to assist the electric motor during that initial battery-powered period, or will it behave more like the Chevy Volt, whose gas engine never turns on until the battery is 65 percent depleted? We'll do our best to wring some answers to those and other questions out of Ford execs as the show continues.