Abstract: A trailer for towing behind a bicycle and having a trailer body with a floor, side walls, front and rear walls, and an open top, a removable top cover for covering the open top, a pair of seats located in the body, side by side with one another, a rigid chassis supporting the body, to which the tow bar and wheels are mounted, a tow bar extending forwardly of the front wall moveably attached to the chassis for connection to a bicycle, a pair of road wheels releasably attached to the chassis, and attachments for securing the body to an automobile roof to adapt the body for use as an automobile luggage carrier.