He opened the box and then high tailed it to his private space in his bedroom emerged about an hour later with first one running smoothly all around the living room beneath our legs etc

Then disappeared reappeared awhile later with a second one running

Works as advertised this seemed like a very coolidea for youngsters ready to expand their building block skills with the added excitement of a remotecontrolled action but after assembly only one circuit worked leaving one set of wheels unable to turn