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

https://www.4shared.com/office/Tq48R6P-ge/pdf-54408-20867.html

All-terrain mobility scooters add knobby tires, robust motors, and improved ground clearance to take on gravel paths, grass, and mild off-road surface areas.