Softwheel has done just that.
They invented a wheel whose spokes are shock absorbers as well as a dynamic suspension system.
What do I mean? I mean that the ‘spokes’ are shock absorbers which alter their length according to task:
What this means, is that the wheel can go over any type of surface with each wheel on essentially, an independent suspension and absorb the shocks of going over rocks and up or down stairs.
The way these shocks/spokes are connected?
That’s pretty cool in my book. Also, the chair doesn't have to take up as much room in a vehicle. Note how the wheels come off in the video.
This technology has been applied to bicycles as well as wheel chairs, and could be a really good innovation for mountain and trail bicycles.
Source:
http://www.softwheel.co.il/