Abstract: The invention relates to a plant for the treatment, in particular the cataphoretic dip coating of objects, in particular of vehicle chassis (4), whereby the objects (4) are run by means of a transport car (5) through several treatment stations and on so doing are dipped in at last one treatment container (91) and retrieved therefrom again. The transport car (5) comprises a chassis (7, 8, 9 to 12), which travels along the trajectory of the objects (4), at least one pivot arm (50, 51), connected to the chassis (7, 8, 9 to 12), a mounting (61) joined to the pivot arm (50, 51), for at least one object (4) and independently operated drives (32, 33, 56, 57, 80, 81) for the translational displacement and the pivoting displacement of the at least one pivot arm (50, 51) and the mounting (61). The transport car (5) can be used not only for transport of the objects (4) for treatment but can also have a service basket (90) fixed thereto, suitable for the accommodation of at least one operative.