Bus Co operated charter busses for hire. One of Bus Co's newer busses was traveling downhill from the southern California mountains when something failed and the bus overturned, killing seven persons. As the bus skidded off the road a portion of the side windows opened and a suitcase was ejected from the bus. The suitcase struck a large boulder and caused it to dislodge and roll down a hill, perpendicular to the road. A homeless man, Art, was sleeping under a tree three hundred feet away from the road when the boulder rolled over his leg, crushing the leg. Art wants to sue Bus Co and has come to your firm for counsel. Analyze this negligence problem, (1) define the rules, (2) persuasively discuss Art's situation going through all of the necessary steps, and (3) reach a recommendation for Art from your firm