With its deeply tinted windows and concept car status, the 2007 Honda Civic Si sedan shown at the 2006 Chicago Auto Show left many guessing about what the production car will look like inside. However, it’s safe to assume that the sedan mirror the coupe with sport bucket seats up front, a thumping standard sound system with a subwoofer, a leather-wrapped steering wheel and alloy shift knob, side and side-curtain airbags, and an available navigation system.