Self-powered vehicle with selectable operational modes

A battery powered golf cart with selectable dual operative modes, walk-behind mode and a ride-on mode, comprising two units, a foldable drive/riding unit at a rear of the golf cart having a pair of electrically operated drive wheels powered by a battery that is accommodated in a battery compartment of the golf cart, and a foldable step/drive portion located at the rear of the golf cart and coupled to a manually tiltable steering column assembly unit having a handle bar and a pair of steering wheels located toward a front of the golf cart such that a distance between the steering wheels and the drive wheels defines a wheel base of the golf cart, said two units being interconnected for cooperative association in said two operative modes by a bar linkage system, having two stable positions, wherein in the ride-on mode, the wheel base is longer than the wheel base in the walk-behind mode;

• wherein:
• the bar linkage system is articulated between the drive/riding unit and the steering column assembly unit and is configured to change the wheel base between walk-behind mode and ride-on mode by a user manually tilting the steering column assembly unit respectively forwards or backwards thereby reducing or extending the wheel base and folding or unfolding the step/drive portion, wherein the bar linkage system is quadrilateral in form each side of which is a link with mutually adjacent links being pivotally connected.