Tomy made the Dustbot robot vacuum in 1985, Electrolux made the Trilobite robot vacuum in 1996, and then washing machines, dishwashers, tumble-dryers, microwaves, microwave meals, disposable diapers, fast fashion, and plug-in vacuums, floor steamers, carpet washers, home automation for lights and curtains, central heating instead of coal/wood fires and ash buckets, fridge-freezers and supermarkets (removing the need for canning, pickling, jamming, preserving), takeaways and food delivery, people having 1-2 children instead of 6-12 children. The amount of human labour in housework has plummetted since 1900.

Plenty of flying cars existed through the 1900s, including commercial ones: https://en.wikipedia.org/wiki/Flying_car

The International Space Station was launched in 1998.