The Tesla Model S is available in four trims: base, Performance, Signature and Signature Performance. The base trim includes a liquid-cooled 40kWh lithium-ion battery, and 60kWh and 85kWh batteries are optional. The 85kWh battery is standard on the other trims, and the Performance and Signature Performance feature a high-performance drive inverter to improve acceleration. Depending upon the battery selected, esimated range at 55 mph varies from 160 miles to 300 miles on a single charge. Standard features include automatic air conditioning, 8-way power seats, AM/FM/HD radio with hard drive, and a unique 17-inch capacitive touch screen that operates all media, communication, cabin and vehicle controls. Performance trims include active air suspension, sport-tuned traction control, 21-inch alloy wheels with performance tires, Nappa leather interior with Alcantara accents, carbon fiber interior and exterior trim, and heated seats with power lumbar. Signature and Signature Performance trims are limited to the first 1000 deliveries and feature a 580 watt, twelve speaker Dolby ProLogic 7.1 sound system, larger capacity hard drive, turn-by-turn navigation, high definition back-up camera, power rear liftgate, Xenon headlamps, LED foglights, proximity keyless entry, removable parcel shelf and 20 kW on-board chargers (all of which is available on the base and Performance trim). Rear-facing jump seats in the rear cargo area, suitable for children up to five feet tall, are optional and increase passenger capacity from five to seven. With the Panoramic Roof option, the entire roof is constructed from lightweight safety glass and can be opened with swipe of the touchscreen.The Tesla Model S is all-new for 2012.