public class Sportsbil extends Bil {
    protected int kmStand;

    public Sportsbil(String reg, String mer, int km) {
        regnr = reg;
        merke = mer;
        kmStand = km;
    }

    public void skrivUt() {
        System.out.println("Sportsbil: " + regnr + ", " + merke + ", har kjoert" + kmStand);
    }
}