All-terrain mobility scooters add knobby tires, robust motors, and boosted ground clearance to take on gravel paths

https://www.4shared.com/office/S9f4vJWijq/pdf-97406-86529.html

All-terrain mobility scooters add knobby tires, robust motors, and boosted ground clearance to take on gravel paths, yard, and mild off-road surfaces.