A coucou was a type of carriage - described as a cross between a sedan chair and a wheelbarrow! Drawn by an old fatigued horse and guided by its equally fatigued master, the box cart was for the French poor and many travelers were packed in tight.
Mail Coaches, via 2Romance (Mail Coaches on the Road: the Louth-London Royal Mail progressing at Speed by Charles Cooper Henderson - Courtesy of Wikipedia http://en.wikipedia.org/wiki/File:Charles_Cooper_Henderson_-_Mail_Coaches_on_the_Road-_the_Louth-London_Royal_Mail_progressing_at_Speed_-_Google_Art_Project.jpg)
1815-20 ca. Interior Travelling Chariot This type of carriage was used for long journeys, such as the Grand Tour of Europe, which every young nobleman and gentleman of substance made in the 18th and early 19th centuries. The extension on the front of the body is known as a “dormeuse boot”. It has folding panels which can be let down to enable the inside passengers to stretch out at full length into the boot and sleep while they travelled. nationaltrustcollections.org.uk