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MSS · 28th September 2021, 21:54

I have to say that driving at 55MPH and 70MPH makes a huge difference to a car's MPG and therefore the the total amount of fuel used for a journey and consequently the pollution per mile.

Perhaps the reason we all drive so many miles is that it is so easy to do. Throttling flow could be a very effective way of achieving a meaningful reduction in pollution. If it puts some people off driving to some extent then that would be an added bonus.

Whilst I often like to use the performance of my cars for acceleration etc, I am never in such a hurry to get anywhere that it cannot be achieved at 50MPH.

28th September 2021, 21:54	#7
MSS This is my second home Rover 75CDT, Jaguar XF-S 3.0V6, V'xhall Omega V6 Estate, Twintop 1.8VVT, Astra Estate and Corsa 1.2 Join Date: Dec 2007 Location: Suffolk Posts: 7,085 Thanks: 283 Thanked 624 Times in 440 Posts	I have to say that driving at 55MPH and 70MPH makes a huge difference to a car's MPG and therefore the the total amount of fuel used for a journey and consequently the pollution per mile. Perhaps the reason we all drive so many miles is that it is so easy to do. Throttling flow could be a very effective way of achieving a meaningful reduction in pollution. If it puts some people off driving to some extent then that would be an added bonus. Whilst I often like to use the performance of my cars for acceleration etc, I am never in such a hurry to get anywhere that it cannot be achieved at 50MPH.