Have you tried using your local public buses? If you are good at manoeuvring your chair into a confined space [via a ramp] then why not give it a go. The drivers will put the ramp in place for you ... it only takes a few seconds.
We used to live in a small village, not to far from you, Edlingham in the late 60's, early 70's. No public transport, nearest bus stop about 6 miles away. So a car or motorbike was essential.
What with all the cuts to rural services, those in the countryside get the biggest hits though they pay just as much or more of council tax. I suppose, in council spending, it is the largest section of people who will benefit over the minority.
I agree with FE on this, I miss mine if I am without it for a few days. It is the convenience factor rather than necessity. What would 400 miles a month cost by cab? Buses are bad enough anyway without a mobility scooter.