The top-level sedan in Infinitis luxury line-up, the 2003 Infiniti Q45 is the brands flagship model. As such, it has Infinitis best of everything, in all areas, handling, power, interior amenity, comfort, safety and class. The result is a vehicle with incredible speed and power, razor sharp handling, standard everything, state of the art safety technology, both passive and active, and limousine comfort and ride quality. This year sees two dozen changes in a complete refreshed design. The changes...