Oh, the link between GM and leaded gasoline makes more sense in that context. TEL had been identified chemically in the mid-19th century, but General Motors ha

Oh, the link between GM and leaded gasoline makes more sense in that context. TEL had been identified chemically in the mid-19th century, but General Motors had discovered its effectiveness as an antiknock agent in 1921, after spending several years attempting to find an additive that was both highly effective and inexpensive. https://en.wikipedia.org/wiki/Tetraethyllead https://en.wikipedia.org/wiki/Tetraethyllead Video treatment: https://www.youtube.com/watch?v=IV3dnLzthDA https://www.youtube.com/watch?v=IV3dnLzthDA