"MeFi is oddly full of cart knowledge today"
Antwerp dog-cart by seriykotik1970 (cc by-nc-sa)
Sangermaine speaks truly: Members sciatrix and Iridic put the cart before the hordes with great posts on the history of the dog cart and a glossary of carriages (in which we learn that a "dog-cart" is not a dog cart, except when it is).