Abstract: An airboat for traversing a body of water comprises a hull having a curved portion that extends from a bow to a step, and from the step to a stern. The step extends laterally from a port side to a starboard side and is positioned between 30% and 35% of the hull length from the bow. Adjustable floats extend laterally outward from the hull and are rotatable to allow different engagement with the water. A motor is mounted on an axle that allows the motor to turn to control yaw of the airboat. The adjustable floats may have curved bottom surfaces and comprise a semicircle of lessening radius from aft to forward for variable water engagement. The airboat may include a passenger compartment with a steering wheel operatively connected to control the motor. The hull has a substantially planar bottom surface between the step and stern.

Abstract: A vehicle for a person to ride on a ground surface includes a rigid frame that has front and rear ends and at least a seat on a top side of the frame. A steering mechanism disposed proximate the front end of the frame is adapted for allowing the person to steer a front wheel. A steering fork may include two lower fork members each selectively detachable from two upper fork members of the steering fork at two telescoping attachment arrangements that includes a front suspension arrangement. A rigid frame extension has a front end that is pivotally fixed proximate the rear end of the frame. The frame extension includes at least one rear wheel fixed with a rear end of the frame extension. A motor is fixed with the front wheel and is electrically connected with at least one battery and a throttle switch fixed with the steering mechanism.

Abstract: A vehicle for a person to ride on a ground surface includes a frame that has a front end and a rear end. The frame supports a seat on a top side of the frame and a steering mechanism proximate the front end of the frame for allowing the person to steer a front wheel. A frame extension has a front end pivotally fixed proximate the rear end of the frame and includes two rear wheels projecting laterally away therefrom. At least one of the rear wheels is coupled with a motor through a transmission to drive the vehicle. In use, the frame extension and rear wheels are pivoted forward to place the vehicle in a collapsed configuration for storage. To use the vehicle, the frame extension is pivoted backward to place the vehicle in an operating configuration. Preferably the motor and transmission are disposed between the two rear wheels.