It's virtually impossible to quantify what fuel efficiency savings have come from F1 but it's fair to say that the technology used in F1 does go into road car design and contributes to fuel efficiency savings - I don't think you can deny that. Now the stats ( a bit of *** packet maths here)
In 2017 there were 269bn litres of fuel used in road cars the world over.
THere are 2.4 kg of co2 emissions per litre, so 645bn kg of emissions the world over.
The average new car gets around 40 to 50 mpg. So a saving of 1mpg would be 2%, or 13bn kg of carbon (6bn lbs).
Your post on p6 estimates that F1 produces 147m lbs of carbon a year (if I'm interpreting you correctly).
Therefore the saving associated with adding 1 mpg to the average road car would cancel out F1 emissions for 41 years (6bn divided by 147m), or since before Nelson piquet had won a championship.
https://www.travelstatsman.com/04032019/269-billion-litres-of-jet-fuel-was-burned-in-2017
https://www.carbonindependent.org/17.html
Any scientists on here care to explain in simple terms how 1 litre of anything ( 1 litre of most liquids is about 1 kg ) can produce 2.4 kgs of gas?
