Was reading about the chemical reaction rocket diff a scientist , (USA 1950s) invented for drag racing.
A tycoon wanted a fast car so ordered a muscle car, uprated to a 490ci? and a rocket diff ......I'll find the article, damn scary.
They had a demo car a beetle with it , went so fast on the 1/4 it got airborne over 130mph and wrecked it in a fiery heap....
They used the wreck as an ad campaign, ahh the good Olde days!