Sentence 1: One morning, Stuart's car wouldn't start. 
 Sentence 3: A new engine would be very costly, so Stuart decided to buy a new car 
 Sentence 4:  He shopped around and found a good deal on a hybrid car 
 Sentence 5:  Once he got his new car, Stuart was very happy and relieved 
 Given Sentence 2: He had it towed to the mechanic's, who said the engine had died.