Abstract: A cart for transporting at least one dolly to facilitate off-loading and on-loading of the dolly into and from a compartment having an entry edge. The cart includes a wheeled frame having upper and lower pairs of guide tracks extending longitudinally of the frame and adapted to support a pair of dollies. The cart carries a locking latch for releasably securing the cart in spaced relation to an oven cabinet or the like, and a bridge member adjacent the forward end of each pair of guide tracks for movement between a retracted position and an extended position bridging the space between the forward ends of the corresponding guide tracks and the entry edge of an adjacent compartment to facilitate off-loading and on-loading of a dolly into and from the compartment. A dolly retainer member is associated with each pair of guide tracks to releasably retain a dolly longitudinally on the corresponding guide tracks during transport.