DH was suspended from driving for three months because of a medical condition, dealt with and now driving again. It enabled us to see how we would cope if in that position permanently. It was quite reassuring. Some of our activities would need to be curtailed because they were some distance away, but generally we managed.
However, when discussing what we would do if his condition proved not controllable and his licence was with drawn, we were able to have a dry run of the plan we already have for such a problem - moving into a town with most things on the doorstep.
The time scale would be governed by how long it took us to find a buyer for our house. But our house has always been well maintained, so preparation for sale would be easy and I am a chucker-out not a hoarder, so moving would not be too difficult and we also would only want to downsize the garden and be nearer amenities, so there would be no problem of downsizing the house. A RightMove search showed a number of houses that met our requirements in the towns we would consider moving to, at a price we were happy with.
We have moved 4 times already, plus helping children negotiate their own moves, so we know the perils and pitfalls. In fact, as a paper exercise it was very re-assuring.