There's currently a big discussion about the future of LMP2 due to that sort of restrictive innovation, taking it closer to spec. Then there's the multitude of

There's currently a big discussion about the future of LMP2 due to that sort of restrictive innovation, taking it closer to spec. Then there's the multitude of one-make series further down the ladder - certainly isn't a new phenomenon to have arbitrarily close cars from one or more manufacturers.