Could you explain how the controls work? I have ALS and my legs are getting weak fast. My arms still have some strength but my hands are somewhat stiff and not much grip strength. I've reached the point where I think I should quit driving for safety sake. I'm not sure hand controls would help me but I thank you for wanting to help others. Most states have an ALS Association that is totally funded by donations. I will pray for your mother-in-law.