class Car() :MovingObjects{
    val carParts = CarParts()
    val carFunctionalities =CarFunctionalities()
    
}

class CarParts():MovingObjects(){
        fun engine(): Engine
        fun wheel(): Wheel
        fun doors():Doors

    } 
}
class CarFunctionalities():MovingObjects{
    fun switchOn()
    fun maxVelocity(): Int
}