In support to blog post https://codewithshabib.com/2017/02/05/introduction-to-strategy-pattern/

SmartCarBoat.swift

class SmartBoat: SmartVehicle, RoadDrivable, WaterDrivable {
    
	func driveOnRoad() {
		print("Vroom!")
	}
	
	func driveOnWater() {
		print("I can run over water, because I can! B-)")
	}
}