The Ethyl Corporation began marketing gasoline with tetraethyl lead additive in 1924, and the use of lead as an anti-knock ingredient continued in the United States until it was completely banned for on-road use in 1996. In hindsight, perhaps making every motor vehicle an emitter of a vaporized neurotoxin wasn't such a great idea, but at least the Ethyl Corporation created this series of "Smart Bird" safety-themed advertisements during the middle 1950s.
Don’t Be the One-Winged Lovebird and Crash Your Car!
And be careful with that Vitamin Pb in your Ethyl.
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