I suffer from ALS sickness Stephen Hawking's theoretical physicist was also his illness. It's a total paralysis, then swallowing, talking and finally losing breathing. Unfortunately in Hungary only 8-10 years can be used to irradiate a wheelchair regardless of illness. Because it is a progressive disease, it is more often necessary to change the electric wheelchair. Now I have reached a stage where my knees are falling apart, and my legs are slipping down from my current wheelchair. One should make my legs together and find out to raise my legs. you can put it in a small place, moving to the bathroom, and last but not least I can go out to the street and be driven by car.