static void doWork()
{
Console.WriteLine("This is the Vehicles Lab.");
Console.WriteLine("==============================================================");
Console.WriteLine("Journey by airplane:");
Airplane myPlane = new Airplane();
myPlane.StartEngine("Contact");
myPlane.TakeOff();
myPlane.Drive();
myPlane.Land();
myPlane.StopEngine("Whirr");
Console.WriteLine("==============================================================");
Console.WriteLine("Journey by car:");
Car myCar = new Car();
myCar.StartEngine("Brm brm");
myCar.Accelerate();
myCar.Drive();
myCar.Brake();
myCar.StopEngine("Phut phut");
Console.WriteLine("==============================================================");
Console.WriteLine("Journey by truck:");
Truck tyra = new Truck();
tyra.StartEngine("Vroom Vroom");
tyra.Haul();
tyra.Drive();
tyra.Tows();
tyra.StopEngine("Klunk Klunk");
Console.WriteLine("==============================================================");
Console.WriteLine("Journey by boat:");
Boat Titantic = new Boat();
Titantic.StartEngine("Swish Swish");
Titantic.Sail();
Titantic.Drive();
Titantic.Floats();
Titantic.StopEngine("Glug Glug");
Console.WriteLine("==============================================================");
Console.WriteLine("Testing polymorphism");
Vehicle v = myCar;
v.Drive();
v = myPlane;
v.Drive();
v = tyra;
v.Drive();
Console.WriteLine("==============================================================");
}