Abstract: An improved wheeled vehicle includes a platform adapted and constructed to support an operator of the vehicle. A plurality of wheels support the vehicle for movement on a surface, the plurality of wheels including at least one front wheel adapted and constructed to steer the vehicle, and at least one rear wheel adapted to be driven to impart motion to the vehicle. A handlebar assembly is connected to at least one of the wheels of the vehicle. The handlebar assembly provides directional control of the vehicle, and extends toward the rear of the platform. A motorized drive mechanism is connected to at least one of the wheels, whereby actuation of the drive mechanism causes the vehicle to move along a surface. A control mechanism actuated by the foot of a user includes at least one pedal, and is used to accelerate and decelerate the vehicle.

Abstract: A puzzle having only a single or, at most, only a few pieces is made out of a material possessing substantially plastic flexibility but also substantial dimensional stability. Each puzzle piece has a length, periphery or surface area which is at least greater than that of the assembled puzzle. Preferably the puzzle piece is branched. The puzzle can take two-dimensional and three-dimensional forms.