A lightweight collapsible four-wheeled scooter with a large platform, the scooter including a height-adjustable non-steering foldable handle assembly in front for gripping by a rider, an adjustable height removable push bar extending to the rear for use by a pusher, a pair of non-swivelable wheels extending to the rear, and a pair of swivelable wheels in the front to enable steering, the scooter being capable of supporting a single standing rider or multiple standing riders, the scooter platform being capable of accommodating an optional removable seat having an optional removable carry basket.