When I sit in a car for a long journey,my neck gets very painfully tired in supporting my head's weight.I think the back seat's back should be made to slide up and down,controlled by a knob,located under the seat near the leg,operated by hand or motor.So,when a passenger is tired,he can lower the back to a suitabl height,put the head on the top of the back,and let the seat back to support his head's weight! Tom Smith New York-- John Yuan, Feb 05 2004 Seems sensible - thanks Tom-- hippo, Feb 06 2024 random, halfbakery