"Honest Abe s Auto entered into a contract to sell a 2018 minivan to Tammy Trucker for $35,000. On the agreed day of delivery, Honest Abe s notified Tammy that they would not be able to perform their obligation. Tammy shopped around, and found the market price for the brand and model of minivan she wanted had risen to $40,000. After some thought, she decided to stick with her current car. Is Honest Abe s Auto liable to Tammy Trucker?"