Question Joshua places a notice in the window of his local minimart which states: 'Luxury car for sale; fully equipped and in exceptional condition. Price available on request'. Nicholas contacts Joshua on Monday to ask if he would be prepared to sell the car for $50,000. Joshua says that he will only accept $55,000. Nicholas says that he will think about it but he may need a few days to get the money together. Joshua responds that he will keep his offer open until 11.30am on Friday but, if Nicholas cannot find the funds by then, he will look elsewhere for another buyer. On Tuesday, Joshua contacts Grace to ask if she would be interested in buying his car for $58,000. Grace replies that she is very interested and would like to know if the car has a Bluetooth car kit. Joshua responds, 'Yes it does. It's yours if I receive your reply by the end of the day on Friday'. Grace posts her acceptance at 6.00pm on Wednesday evening and Joshua receives her letter at 10.30am on Friday. On Wednesday, Elijah tells Joshua that he would like to buy his car. Joshua replies, 'I will sell for $58,000, however, as such a large sum of money is involved, I want written confirmation of acceptance by email'. Elijah telephones Joshua later that day and leaves a voicemail message on Joshua's mobile phone saying he accepts Joshua's offer. Later that day, Joshua sees that he has a message from Elijah but accidentally deletes it before listening to it. On Thursday afternoon, James offers Joshua $57,000 in cash for the car. Joshua accepts immediately. Joshua posts letters to Grace and Nicholas at 5.00pm on Thursday evening withdrawing his offers. Grace receives her letter at 9.30am on Friday but Nicholas's letter never arrives. On Thursday evening, Nicholas is at his local bar when he overhears James saying, 'Drinks are on me. I've just got a great deal on a second hand luxury car!' Nicholas does not know James and so does not want to interrupt his celebrations, however, he is concerned that James may have bought Joshua's car. At 11.00am on Friday, Nicholas contacts Joshua and says he has the $55,000 and asks when he can collect the car. Joshua responds that he has already sold the car to James. With reference to relevant case law, advise the parties as to any rights and liabilities which may arise in the law of contract