Tub might be a bit high-flown phrase. Strictly speaking, it is a very flat plastic plate with raised edges. These will be shipped folded, which initially made me a bit skeptical. But at room temperature, the kinks were out of sight and off we went in the trunk of the snow animal (Skoda Yeti) quickly (1 hour).
I can absolutely recommend this trunk when. Better the few euros more to invest before you annoyed or later have to laboriously remove with a vacuum cleaner dirt from the carpet in the trunk.
Oh, slipping the tub is. While that is no substitute for proper load securing, but at least the box empties, or basket with purchases slips no longer in every corner of the area.