Currently the only off-road mid-wheel-drive chair, the Frontier All-Terrain Power Wheelchair is only 28 inches wide, attains 7-mile-per-hour ground speed, and has turn-on-the-spot maneuverability. It features: two battery-powered four-pole motors that provide 1,000 watts of mid-wheel power; an all-digital, computer-assisted drive system; full six-wheel articulated suspension frame; and sure-grip knobby tires.