What significant logistical benefit did PET bottles offer compared to an equivalent volume of glass bottles?

Answer

A massive reduction in weight per unit, decreasing shipping costs and fuel consumption

An empty one-liter glass bottle weighed approximately 400 to 500 grams, while a comparable PET bottle weighed only 15 to 20 grams, drastically reducing distribution costs.

What significant logistical benefit did PET bottles offer compared to an equivalent volume of glass bottles?
inventionMaterialplasticbottle