The MUXI is a legally compliant, well-equipped 750W commuter that Tom's Guide found could handle steep terrain fine on assist alone despite having only one gear — but its real-world range on hills (about 40 miles per Tom's Guide) is roughly half Segway's claimed 80-mile figure, and it has no front s

The Xyber is an extraordinarily powerful hill-climber — OutdoorGearLab measured it holding a steady 20 mph up a 9% grade with 'no whine, no struggle, no deceleration' — but its motor output (3,000W single-battery, up to 6,000W/5,230W peak dual-battery, per Segway and OutdoorGearLab respectively) is