Jean owns a small manufacturing company in North Carolina with a sales force of ten salespersons. The company provides a company car to each of the salespersons to use. The company sells throughout the southeastern United States. Jean suspects that during the long, hot, humid summer the salespersons often do not take the fastest route from one customer to another because they enjoy the comfort of the air conditioning in their cars. Jean decides to order a fleet of ten cars without air conditioning, believing that the salespersons will spend less time in their cars and more time in the offices of potential customers. Air conditioning is an option on the economy car, the Mink, although the factory makes all Minks with air conditioning unless a customer special orders one without air conditioning. The salesperson is a little surprised at Jean's plan, but reaches an oral agreement with Jean for the $10$ cars. The salesperson orders the cars. A few weeks later Jean's sales force finds out about the plan and revolts. Jean decides it is not worth angering the sales force to make them use nonair$-$conditioned cars. She calls the salesperson at the dealer to cancel the order for the cars, six of which have arrived, and the other four, which will be built next week. Can the dealer hold Jean to the purchase of any of the cars?