FIG. 1 is a perspective view of a vehicle navigation unit, showing our new, original and ornamental design;
FIG. 2 is front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top view thereof; and
FIG. 7 is a bottom view thereof;
FIG. 8 is a perspective view thereof showing lid at upper front portion is open; and,
FIG. 9 is a perspective view thereof showing small lid at lower left front portion is open.