Nissan Motor Corp. USA's Infiniti edged out Toyota Motor Sales USA's Lexus in J.D. Power & Associates' '96 Customer Satisfaction Report, marking the first time Lexus fell to No. 2 on the much-promoted index. American Honda Motor Co.'s Honda division, meanwhile, took first place in light trucks away from Toyota, which held the top spot for five years. That's a coup for Honda, a newcomer to the truck market.