Its all to do with marketing.....
With more and more diesel cars being bought, a lot of it is down to improved performace due to a car like this being developed.
The Diesel race cars are more economical and make fewer fuel stops showing how efficient they can be, it also shows their reliaility and performance.
I think petrol has well and truely been proven, now manufactures are concertrating on diesel as that is what powers increasing numbers of cars they are selling.
What If There Were No Hypothetical Questions?