Gull wing doors are supposed to make the whole car seem exotic . But the driver gets an old fashioned hinged door.  If I were paying $150,000 for an exotic car   I woudl want that toy for myself and not just for the passengers in the back. Technically, the winged doors are completely irrelevant to how the car functions. But without them the car is stylistically quite conventional.  Without the gull wings the car drops $70,000 in value.