All-terrain mobility scooters include knobby tires, robust motors, and improved ground clearance to deal with gravel paths

https://echo-wiki.win/index.php/Why_Buying_A_Mobility_Scooter_Is_Your_Next_Big_Obsession%3F

All-terrain mobility scooters include knobby tires, robust motors, and enhanced ground clearance to deal with gravel courses, lawn, and moderate off-road surfaces.