toString method class

In java, python and ruby, as I know, there is a "ToString" method class which allow debugging easily..
For example , you can print an instance :

class Car
def _toString_():
return "car"
Car myCar
print(myCar).

It would be greate to have the same feature for QObject and use it with qDebug(). Actually, overload the QDebug class operator << is not cute.

class Car : public QObject
{
QString toString()

}

qDebug()<<car;