Sally Silly had bought a new lawn mower. Sally's boyfriend, Brad Scoop, works on small engines. Brad has decided that the new lawn mower does not go fast enough so he tinkered with the motor to go faster. As Sally was mowing, the lawn mower started moving so fast that it exploded. Parts of the lawn mower flew everywhere and one struck Sally in the eye causing injury to the eye. Sally has come to your law firm to sue the manufacturer of the lawn mower.

• What is the reasons Sally can sue the manufacturer?
• What possible defenses could the lawn mower company use in this case?