Both kids fought over it for an hour.

I left the EzyRoller in the driveway before anyone knew it existed. My eight-year-old spotted it first. She sat down, twisted the front bar left and right, and shot off down the concrete. My five-year-old screamed. Then she tried. Then they negotiated turns. Then they fought. Then it rained and they came inside still arguing.

The EzyRoller moves by left-to-right leg motion on the front bar. No batteries. No pedaling. The snake-like motion takes a few minutes to learn, then the kid figures it out. The wider front wheels handle sidewalk cracks. Smooth surfaces work best: concrete, asphalt, indoor floors.

Ages 3 to 12, holds up to 100 pounds. A toy that lives in the driveway and produces sweaty, hungry kids at dinnertime.