I assume the RAC would get you home with your power chair but lucky not to have had a breakdown myself its the problems of getting a suitable adapted car while yours is off the road being repaired or as in my case being repaired after an accident.
In my two cases of no fault accidents since 2008 and joining MB both times have been a nightmare getting an adapted car to stand-in for a couple of weeks, not a problem for carers who drive on behalf of a disabled person but like I’ve said “a nightmare” for disabled drivers of adapted cars who’s carer does not drive but such is life in the disabled world we find ourselves in.
Most of the time being able to drive and get about in my disabled condition over the past 16 years has been a joy and 99% of that time a carefree breeze so I wouldn’t worry to much about getting home after a breakdown should you be unlucky enough to have one.