The Otto Bock aluminium "gold / silver" look-tuned hook (model 10A18 [link]) showed some malfunction in our warm (hot?) summer weather with no air condition.
I drive a Mini Cooper 2007. However, the way Mini BMW went about their hard to tackle electronic problems were not transparent or easy to understand.
The Mini Cooper 2007 can be a somewhat expensive but beautiful car to drive as an amputee. Since Mini BMW Switzerland confronted me with a difficult situation (they recommended modification through dealers but appeared to insufficiently document these guys with the effect that modification cost ran up comparatively high), I am detailing the experience from my point of view here. Please consider getting in touch with Mini BMW beforehand and consider other vehicles as well. Volkswagen, for example, have their own product line for disability modifications.