Strategic precision in a compact four-door “coupe” BY MARK MAYNARD Highland Valley Road is a tangled black shoelace of two-lane country road in northeastern San Diego County. It’s a favorite for car-club runs and leisure drives to get some fresh air. The meandering road leads past acres of growing land for landscape nurseries and pine-tree farms before ascending to an area of vineyards and wineries. Mature scrub oaks form shaded canopies along stretches amid a...