public class Program

{

public static void Main()

{

Cessna plane = new Cessna();

Car Accord = new Car();

FighterJet Jet = new FighterJet();

JetSki Floaty = new JetSki();

Motorcycle AndreBikey = new Motorcycle();

Boat BoatyMcBoatFace = new Boat();

// Build a collection of all vehicles that fly

List<IAir> FlyingThings = new List<IAir>() {

plane, Jet

};

// With a single `foreach`, have each vehicle Fly()

FlyingThings.ForEach(ft => ft.Fly());

// Build a collection of all vehicles that operate on roads

List<ILand> RoadVehicles = new List<ILand>() {

AndreBikey, Accord

};

// With a single `foreach`, have each road vehicle Drive()

RoadVehicles.ForEach(rv => rv.Drive());

// Build a collection of all vehicles that operate on water

List<IWater> WaterVehicles = new List<IWater>() {

BoatyMcBoatFace, Floaty

};

// With a single `foreach`, have each water vehicle Drive()

WaterVehicles.ForEach(wv => wv.Drive());

}

}

}