I need help with this Java Programing question:

Draw the most likely class hierarchy for the following classes: Vehicle, Boat, LandVehicle, Bicycle, Helicopter, Car, Canoe, WaterVehicle, VehicleRegistry, Truck, Kayak, AirVehicle, Plane.

Consider a Business class that contains an array of Employee objects called employees (using the class defined above). Write two methods for the Business class: getHighestPaid(), which returns the Employee who has been paid the most in total, and getHighestTaxed(), which returns the Employee who has been taxed the most in total. Note: you do not need to handle the case of ties