The liquid tire chain system was a rare option offered on chevys in 1969 for just one year. This lady came in with a couple of full cans just sitting in her
GM once offered "liquid tire chains" to enhance winter driving performance
Liquid Tire Chain - The Supercar Registry
5 Odd Options for Classic Chevys
Rare Chevrolet Options You Likely Never Knew Existed. - Westphal Chevy Blog