noun, masculine/ˌkot͡ʃe de ˌsan feɾˈnando/
shanks' mare (one's feet, used for getting around, as opposed to a vehicle)
“Tuvimos que volver en el coche de San Fernando.” — We had to walk back.
Clipped from the rhyming phrase "en el coche de San Fernando: un ratito a pie y otro andando" (literally, "in St. Ferdinand's car: a little while by foot and another walking").