Create a class called Vehicle in Vehicle.java with instance variables make (such as Ford, GM, Chrysler, Toyota, or Honda), year, and horsepower (200, 300, and 400). Add the necessary constructor and set and get methods. Then create classes Bus and Truck in program files Bus.java and Truck.java, respectively. Bus has an instance variable called numOfPassengers (1-50) and Truck has an instance variable called towingCapacity (0.5, 1.0, 2.0, or 3.0 tons). Both Bus and Truck inherit from Vehicle and contain their own toString methods for displaying all their attributes (including the inherited ones). Compile all three classes.

Modify Vehicle.java so that it includes an instance variable called milesPerGal. Both Bus and Truck have a method called calculateMPG. The formula for a bus's milesPerGal is 10000/numOfPassengers/horsepower, but for a truck it is 5000/towingCapacity/horsepower. Create a program called VehicleApp.java that displays all information about a specific bus and truck of your choice.