Final answer:
Louis owns the Servient tenement, which is the property that is subject to an easement allowing Larry to walk across Louis' parking spot to reach his car.
Step-by-step explanation:
In the scenario where Larry has an easement to walk across Louis' parking spot to gain access to his car, Louis owns the Servient tenement. The term 'Servient tenement' refers to the parcel of land that is subject to the easement and provides benefit to another property, known as the Dominant tenement. The Dominant tenement is the property that benefits from the easement, which in this case is Larry's property where he would need to cross the parking spot to reach his car.