Recumbant style powered unicycle

A powered unicycle device for use upon a riding surface, comprising:

• a support frame;
• an axle engaged with the support frame;
• a single wheel rotatably coupled to the axle, the wheel extending substantially in a fore-aft direction in which the unicycle device travels;
• a motor for driving the wheel;
• electronic equipment, in communication with the motor, configured to maintain fore-aft balance of the unicycle device while being ridden;
• an elongated curved rail coupled to the support frame and extending laterally in a side-to-side direction substantially transverse to the fore-aft direction, the rail having a curved portion defining a curved path of the rail, the curved portion extending contiguously from a first lateral end of the rail to a second lateral end of the rail and curved downwardly and rearwardly in the fore-aft direction;
• and
• a seat disposed above the wheel and movably coupled to the rail, the seat capable of moving laterally along the curved path of the rail, in the side-to-side direction substantially transverse to the fore-aft direction, while the unicycle device is being ridden.