That seems unfortunately true. The batmobile doesn't perform badly so to say, but I'd be looking for something closer to the buggy motor in terms of torque and speed, as I doubt a single M motor will have much oomph to it.
There really hasn't been a motor since it that can compete, the closest people have got is using third party systems like the buwizz that provide a higher current(?) to power functions 1.0 motors and at 129 euros the price isn't very appealing for something that could potentially damage the motors.