Definiendo clases en JS

class.js

   
    class Vehicle{
    constructor(color, model){
        this.color= color;
        this.model= model;
    }
    
    sayModel(){console.log('My model is &{this.model}');
}
    sayColor(){console.log('My color is &{this.color}')
}
 
};

class Car extends Vehicle{
    constructor(color, model,ruedas){
        super(color, model);
        this.ruedas=ruedas };
        
        sayCocheMoto(){
            if (this.ruedas== 4)
            console.log('Soy un coche');
            else if(this.ruedas==2)
            console.log('Soy una moto');
            }
        }
    

    class Moto extends Vehicle{
        constructor(color, model,ruedas){
            super(color,model,ruedas);
            this.ruedas=ruedas }
        
    sayCocheMoto(){
    if (this.ruedas== 4)
    console.log('Soy un coche');
    else if(this.ruedas==2)
    console.log('Soy una moto');
    }
}

let coche = new Car('black', 'diesel',4);
console.log (coche.sayCocheMoto());
console.log (vehicle.sayModel()

);


let moto = new Moto('black','diesel',2);
console.log(moto.sayCocheMoto());
console.log(vehicle.sayModel())