The big Lex luxury liner has been given an aggressive makeover for 2007. This is the official debut of the production version. Underneath the all-new bodywork, which was previewed by the LFS-H Tokyo concept, is a new stiffer structure. The exterior resembles a giant IS350, not surprisingly, given a radical departure from the current conservative car. The long-wheelbase version shown in Detroit spans 202.8 inches and is the first LS to feature a long-wheelbase option. A short-wheelbase variant is also available, likely the volume seller. The engine now measures 4.6 liters, up from 4.3 liters, and makes a much-improved 380 horsepower and 370 pound-feet of torque. Acceleration times from 0 to 60 are expected to be just below 5.5 seconds. Other notable improvements include the world's first passenger car use of an 8-speed automatic transmission (one more gear than in Mercedes’ 7-speed unit) and a seriously powerful Mark Levinson sound system. Overkill? Not really, considering Toyota's determined dominance as the new number one in America is to be expected for this calendar year. The '07 LS460 on sale this fall for a base price that should begin in the low $60,000 range in SWB guise.