Motorsport is going to be an easy target in the coming years.
It already is really, and those who see the writing on the wall are trying to respond in different ways. At international level, you have this with Honda, plus the likes of the ACO with the "no visible smoke at any time " requirement from diesel-engined cars (although that one is relatively easy to get round depending on what you refine your diesel from), and the ACO's encouragement over the years of alternative entrants.
On a more local level, the control tyre for the British Off-Road Championship this year is a road-biased, all-terrain tyre rather than the mud terrain tyres we ran last year, to minimise environmental damage. We shall see how quite much environmental damage is minimised on Round One next month as we sruggle for grip......
MG Mark