How cat's eyes were invented

In 1934, the late Percy Shaw almost crashed while driving home from the pub on a foggy night in West Yorkshire, in England. He was saved when his headlights were reflected in the eyes of a cat and it gave him a brilliant idea. He invented reflective studs for the road and called them cat’s eyes. Rachel Naylor speaks to Percy's great-niece, Glenda Shaw.(Photo: Percy Shaw holding one of his cat's eyes, outside his factory in Halifax, England, in 1958. Credit: Getty Images)