There are no lunar rovers, no 19th century single horsepowered wagons and not even anything by way of an open wheel racer to be found in its car list at launch. Yet, conversely, this is possibly the most focussed, directly enjoyable game Polyphony Digital has put out since the heady days of Gran Turismo 3. Racing improves the breed, industrialist Soichiro Honda once said, and Gran Turismo Sport is proof positive of that.