// Greedy Constructor
 public Car(string make, string model, string color, int maximumOccupancy, double fuelEfficiency, Odometer kms, FuelTank tank)
 {
     Make             = make;
     Model            = model;
     Color            = color;
     MaximumOccupancy = maximumOccupancy;
     FuelEfficiency   = fuelEfficiency;
     KMs  = kms;
     Tank = tank;
 }
 // Default Constructor
 public Car()
 {
     Make             = "Honda";
     Model            = "CRV";
     Color            = "White";
     MaximumOccupancy = 5;
     FuelEfficiency   = 9.5;
     KMs  = new Odometer();
     Tank = new FuelTank();
 }