Megan leaves her car's motor running in neutral and carelessly forgets to set the parking brake when she gets out of her car to buy a pack of gum at a gas station. The car rolls and crashes into a nearby gas station pump, igniting a fire that spreads quickly to a construction site a block away. A burned wall at the site collapses onto a crane, which falls on Harry Potter (pre-Hogwarts), a bystander, and injures him. Harry sues Megan. What claim can Harry bring and what must he prove under that claim to recover damages from Megan? What is the element in Harry’s case against Megan that will be the hardest for Harry to prove? Why?