Robert Kulovany was injured while working when he fell through the floor of a trailer. Kulovany's employer leased the trailer from Cerco Products Inc. and had had the trailer in its possession for twenty months. At the time of the injury, there was a visible defect in the floor of the trailer. Under the lease agreement, Kulovany's employer had a duty to inspect the trailer for defects. Kulovany sued Cerco. As the bailor in a mutual-benefit bailment, was Cerco liable for Kulovany's injuries?