compare the profit margins per one car sold of a luxury car model (BMW, Tesla, Porche, etc) vs a mass market car model (Toyota Corolla, Honda Civic, etc). How many mass market cars would you need to sell in order to make the same profit as one luxury car? Calculate the total interest paid if the customer takes out a 4 year loan on each car. Add this interest to the profit margins of each car and compare them again.