At this time we're not even capable of imagining what might exist in a handful of centuries. Technology is advancing at a multiplicative rate. That means it's getting more and more advanced at a faster and faster rate. The difference between technology now and technology 500 years from now will be enormously bigger than the difference between technology now and technology 500 years ago. Can you imagine trying to explain to Columbus what satellite internet is? Somebody 500 years from now would find it even more challenging to explain their everyday technology to us.
Maybe....maybe not. One thing is for certain....you can't reinvent the wheel. Most of the great technology/machines has been invented in the last one hundred and fifty years. That means for hundreds of thousands of years up to the mid 1800s humans lived mostly as their remote ancestors had lived.
Life was a struggle filled with hard work and calamities for 99% of the world's population.
Then the Industrial Revolution occurred in the mid 1800s. The people of 1900, had access to much more machines and technological advances than the people of fifty years previous.
Again, the people of 1950 had much more than the people of 1900.
Again, the people of 2000 had much more than the people of 1950.
Yet, a person (at least this person) could live a very satisfying life with just the stuff available in 1950.
Cars, planes, radios, movie theaters, tvs, refrigerators, air conditioning, washing machines, dishwashers, and a host of other devices, machines, and medical advances were readily available. Most of the things I enjoy doing in life were around in 1950. They're better today, but they're basically the same type of labor-saving machine.
We live closer to the lives of the people of 1950 than the people of 1950 did to the people of 1900.
In short, the invention of devices to make out life greatly easier has been diminishing rather than increasing.
I was quite happy before laptop computers and cell phones. I don't much use a cell phone now. I could find my way around quite well without GPS.
I enjoy the new toys available today, but I could get along without them. All I crave is good health.
So what new things might be available 50 to 100 years from now? We won't know until they're here.
Short of being able to get thousands of miles from my home more rapidly and more comfortably than now would be nice. But it's not too terrible at the moment.
Cures for horrible diseases would be nice as well.
But that wouldn't necessarily make a healthy person's life more interesting. He or she would still have to do things to make life interesting. Machines can't perform that function very well if at all.
But again, what new great machines are in the future?
There might not be as many as you think.
P.S. Forget about flying cars. Until they find a way to reverse gravity (ha,ha), flying cars will not happen.