When American families need to take a long-distance road trip, one letter of the alphabet can make a surprising difference. In this case, the “L” version of the Lincoln Navigator seems purpose-built for the task, without needing to ask the family unit to make many compromises. Certainly, America offers plenty of large SUVs, but not all of them appear as well suited as this one. The best news for used SUV shoppers is that a fourth-gen Navigator L has now taken a significant depreciation hit, while still being modern enough where it really counts.