The flower car is used to carry flowers for the burial service, or sometimes to carry the coffin under a bed of flowers. Built on the same commercial chassis as a hearse, the flower car has half-height rear bodywork on the rear similar to a pickup truck bed. The bed contains a liner to hold the flowers, normally built of stainless steel to resist rust. Some flower cars have a raised, flat tonneau cover across the bed at the top, upon which the flowers sit; the center portion sometimes is designed to raise and lower, hydraulically or by hand.