https://www.theguardian.com/lifeandstyle/2021/jun/24/mystery-of-wheelie-suitcase-how-gender-stereotypes-held-back-history-of-invention

Why have some brilliant innovations – from rolling luggage to electric cars – taken so long to come to market? Macho culture has a lot to answer for

In 1972 an American luggage executive unscrewed four castors from a wardrobe and fixed them to a suitcase. Then he put a strap on his contraption and trotted it gleefully around his house.