The new Honda Civic Si model was anounced on Chicago Auto Show. A concept on the Chicago stage but promised for production in the fall, the Civic Si Sedan will share the current Si Coupe’s 197-hp four and six-speed manual transmission, along with its limited-slip differential. New 18-inch wheels jazz up the sedan, and four-piston Brembo brakes increase stopping capability. Honda says 2007 will be the first time that two Si models will be available at the same time in the Honda lineup.