That, was a brilliant design; Kid sits so low that the wheels will reach limit of adhesion (especially with plastic wheels) before the vehicle overturns. Seat is easily adjusted fore/aft for size. Notice the ribbing in the molded plastic at the turn of the frame, and on the fork, that's there for a bit of shock absorption, or to act as a designed yield point in the event of overload; There's a central longitudinal rib on each at the neutral axis in bending, so those are designed to yield in bending. Only flaw in the design is that the relatively thin-wall wheels would wear out and I don't think you could buy only replacement wheels, at least cheaper than a whole new Big Wheel.