Automobile alliance, a large automobile manufacturing company, organizes the vehicles it manufactures into three families: a family of trucks, a family of small cars, and a family of midsized and luxury cars. one plant outside detroit, mi, assembles two models from the family of midsized and luxury cars. the first model, the family thrillseeker, is a four-door sedan with vinyl seats, plastic interior, standard features, and excellent gas mileage. it is marketed as a smart buy for middle-class families with tight budgets, and each family thrillseeker sold generates a modest profit of $3,600 for the company. the second model, the classy cruiser, is a two-door luxury sedan with leather seats, wooden interior, custom features, and navigational capabilities. it is marketed as a privilege of affluence for upper-middle-class families, and each classy cruiser sold generates a healthy profit of $5,400 for the company.