I would love to see a technology that exist for many millenia disappear in the future and one of the best candidates is the wheel.I think that levitating and hovering technologies will make the wheel obsolete in the far future but what will be these technologies?
I think the first candidate to make wheel a thing of past will be the room temperature superconductors. They could make hovering cars a reality as there are trains that float little above the ground with Maglev technology. If superconductors were at room temperature they could be everywhere. Everything that needs wheels and supports to move around would no longer need them and would hover and float around through electromagnetic currents and fields.
The other technology could be electromagnetic propulsion/repulsion . They could enable flying cars that wouldn't have wheels and flying/floating objects that would use electromagnetic fields and waves to float or hover above the ground. This makes sense since electromagnetism is much stronger than gravity.
The other technology that might become possible in the far future is antigravity. However most people think that antigravity is impossible and will never become reality.(But that is an issue for another thread). Antigravity could make things float and fly magically as if they weren't being attracted by Earth's gravity.