A cart with a pair of wheels (14) connected via a tilt mechanism (16) on opposing sides of a cart body (12). The cart body is releasably attachable to a frame (99) of a pedal cycle or other tilt-cornering vehicle so that the pair of wheels function as front wheels of a tricycle configuration. When separate from the pedal-cycle, the cart (10, 100, 150, 170, 200) forms a free-standing cart with a tilt lock (18) deployed to lock tilting of cart body (12).