ECO includes 16-inch steel wheels, OnStar, a tilt-and-telescoping steering wheel, air-conditioning, a six-way (manual) adjustable driver seat, a 60/40-split rear seat, a trip computer, full power accessories and a six-speaker stereo with a CD/MP3 player, satellite radio and an auxiliary audio jack. A Connectivity package adds Bluetooth, a USB port and steering-wheel-mounted audio controls, maximum fuel efficiency with aerodynamic improvements, lightweight alloy wheels, low-rolling-resistance tires, a smaller fuel tank and a few minor feature deletions to further reduce weight. CARFAX available online at www.roughlockauto.com.