Fred Lyon of New York, while on vacation in California, rented a new model Home Run automobile from Hart’s Drive-ACar. The car was manufactured by the Dumars Motor Company and was purchased by Hart’s from Jammer, Inc., an automobile importer. Lyon was driving the car on a street in San Jose when, due to a defect in the steering mechanism, it suddenly became impossible to steer. The speed of the car at the time was thirty miles per hour, but before Lyon could bring it to a stop, the car jumped a low curb and struck Peter Wolf, who was standing on the sidewalk, breaking both of his legs and causing other injuries. What rights does Wolf have against (a) Hart’s Drive-A-Car, (b) Dumars Motor Company, (c) Jammer, and (d) Lyon?