failure (such as disconnecting the battery). In the event of a power failure, the mechatronic unit would simply read the last saved data entry from the system's memory, thus, the transmission did not have to completely relearn the owner's driving style. Additionally, the Expedition is powered by the same 5.4 liter Triton V8 engine from the previous generation, rated at and of torque. When properly equipped with the heavy-duty trailer towing package, it can tow up to . Expedition is classed under the Tier 2, Bin 5 / ULEV 2 Ultra Low Emission Vehicle environmental classification. Off-road geometry figures for approach, departure and ramp breakover angles are 22°, 21° and 18° respectively. Minimum running (lowest point) ground clearance is . Underbody (overall) ground clearance is 9.1 inches (230 mm). Selectable automatic full-time Control Trac four-wheel drive continues to be offered, and uses a two-speed dual range BorgWarner 4417 transfer case with intelligent locking center multi-disc differential and "torque biasing" capability. Four-wheel electronic traction control is standard and off-road underbody skid plate armor is optional. A new default off-road program with throttle response recalibration was added, and is automatically activated when Four Low (lock) mode is selected. Expedition can achieve an off-road crawl ratio of 41.06:1 with a low range ratio of 2.64:1 and rear axle ratio of 3.73:1. The SUV also underwent a nip/tuck with a few cosmetic enhancements, both inside and out. Expedition's front end now featured Ford's signature three "hollow-bar" grille to complement the SUV' close relation to the F-150 and Super Duty pickups. New complex stepped style multifaceted headlamps, side view mirrors with updated LED lane departure indicators, sleeker body work and redesigned tail lamps were also added. The interior received a new dash, which would eventually appear on the 2008 Super Duty, new center console, and redesigned first row captains chairs, door panels and interior trim. To further reduce outside noise intrusion for quieter, more isolated ride comfort, new SoundScreen laminated acoustic and solar tinted windshield was added with thicker laminated side window glass. The new SUV was unveiled at the Houston Auto Show rather than at the North American International Auto Show, the Greater Los Angeles Auto Show, or the New York International Auto Show where most new models are, as 20 percent of all Expedition sales are in Texas. The third generation Expedition went on sale in August 2006. The first 2007 Expedition to