<?php

class Car implements IVehicle
{

    /**
     * @var bool
     */
    protected $engine;

    public function start()
    {
        $this->engine = true;
    }

    public function stop()
    {
        $this->engine = false;
    }

    public function status()
    {
        return $this->engine ? "Automotor eingeschaltet" : "Automotor ausgeschaltet";
    }
}