If you present your wife with a list of cars and costs she may not pick a Model S. When they need to make a practical choice they can surprise you. Finding a car in the right colour may be your biggest issue. For many years I owned and restored Alfa Spiders while my wife drove the family cars. I wanted her to experience a sports car so I traded in the last Alfa for a Miata. She joined a club where there were weekly ice cream runs and annual tours to Vermont or West Virginia. She participated in track days and won prizes at Solo2 events. We still keep her Miata as a 'modern classic' but she drives the Model S. It can be a docile vehicle to control and she ignores the tuners who challenge her to a race. So sign up your wife for skid school and track training to complete her driver education, then it won't matter which car she drives.