Off- Topic- Disabled Car Driving

Dear readers of this forum, I am addressing a question to you/uch, to which I have not yet found a (qualified) answer on the web: I have been paralyzed since an accident, I have a correspondingly converted vehicle in which despite switching to manual operation theoretically gas and brake can also be operated by foot. When I was on the road with a former friend abens and it was about the topic “home driving”, we actually got tired, whether my girlfriend as a nich Is it possible for a disabled person to drive a disabled person with my disabled person’s converted vehicle, legally speaking? She would have no problem having all the physical skills to safely control the car. But can she do so too? Can a disabled person drive a disabled person’s converted car? And even if I am sitting next to it? Or is it a /no problem in general? Conversely, the situation is also legally clear, but can the reverse be drawn from it? because if I should have a friend who doesn’t have a car (and not like me sitting in a wheelchair), that would affect him too… I really look forward to answering my question and thank you for the opportunity to exchange views here in this nice forum, Lisa