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

https://wiki-wire.win/index.php/11_%22Faux_Pas%22_That_Are_Actually_Acceptable_To_Make_With_Your_Electric_Mobility_Scooter

All-terrain mobility scooters add knobby tires, robust motors, and boosted ground clearance to deal with gravel courses, grass, and mild off-road surfaces.