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

https://www.scribd.com/document/1051405879/10-Misconceptions-Your-Boss-Shares-Concerning-Mobility-Scooter-155504

All-terrain mobility scooters include knobby tires, robust motors, and enhanced ground clearance to take on gravel courses, lawn, and moderate off-road surface areas.