Abstract: A car wash dolly that uses a single shaft having two camshaft lobes and a series of snap ring grooves. The bolt-less design of the dolly includes a stronger camshaft and minimized component count. The center link and wheels may be mounted directly on the shaft to produce a sturdy design for the dolly. Grooves and snap rings are provided to “lock” wheels in their place on the shaft and to keep wheels physically close to one another to prevent dirt or other debris from getting between the wheels. Optional thrust washers also may be provided between plastic wheels and snap rings to reduce friction between the wheels during operation of the dolly in a car wash facility. The dolly according to the present disclosure is intended to roll, via a conveyor chain, on a slotted track of an auto-laundry system. Because of rules governing Abstracts, this Abstract should not be used to construe the claims in this patent application.