https://www.openlearning.com/u..../howemcpherson-sm2k8
https://devine-hermann.blogbri....ght.net/the-top-self
All Terrain Self Propelled Wheelchair This type of wheelchair can handle any outdoor terrain, such as cobbles, mud and gravel. It can also be used on grass or snow. This kind of wheelchair can also be used indoors for use. The chair is self-propelled, allowing the user to control their own speed. It lets them be more independent. A lot of these chairs