Oh. I want one. Oh please, may I have a giant mechanical spider vehicle? Please? I would ride it to classes, and take it on trips... PLEASE.
This reminds me a great deal of the second book in the Mortal Engines series. If you haven't read them, you certainly should. Anyway, there is a plot line with an underwater city of lost boys who steal from towns and cities (which are mobile and eat each other for resources... municiple darwinism!). These lost boys travel from town to town in limpets, large mechanical ship-type-things, which can move in the water, but extend spider-like legs to walk around on land or ice.
Anyway, the spider's name is La Princesse, and although she was walking around Liverpool, she was operated by FRENCH engineers. See? The French own steampunk.