There is one thing that needs to be mentioned that I haven't seen anywhere in the article. My father works in the wheelchair industry as a salesmen and has seen one of these devices in action before. Yes, the may be able to scale stairs to a point, but in doing so they have to sacrifice some other aspects. The ability to travel outdoors across any difficult terrain is limited. Also, at least with all the past generations (yes, this isn't the first wheelchair like this), they had a problem with breaking down very easily due to some of the moving parts that wheelchairs don't usually have to deal with. Just my two cents.
There is one thing that needs to be mentioned that I haven't seen anywhere in the article. My father works in the wheelchair industry as a salesmen and has seen one of these devices in action before. Yes, the may be able to scale stairs to a point, but in doing so they have to sacrifice some other aspects. The ability to travel outdoors across any difficult terrain is limited. Also, at least with all the past generations (yes, this isn't the first wheelchair like this), they had a problem with breaking down very easily due to some of the moving parts that wheelchairs don't usually have to deal with. Just my two cents.