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

https://emilianostfw379.cavandoragh.org/everything-you-need-to-be-aware-of-mobility-scooter

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