My Mrs worked for porsche at the time she did her speed awareness course. And the lecturer stated,
"Car stopping distances are the same as they were 40 years ago"
Was hysterical when a fellow attendant of that course pointed out she worked for porsche and have carbon ceramic brakes and can stop a lot quicker.
She wouldn't believe it though,
When my Mrs came home and told me about this I chuckled to myself quite loudly as I know my old mk2 escort didn't stop unless you hit something.
That lecturer sure is wrong about that, not even counting carbon ceramic brakes, 'normal' brakes and tyres have just moved on so much over the years,....I'm more into bikes than cars, having recently got an 80's one that I had back in the day, I can confirm that my other modern bike stops so much quicker.