In his latest blog post, Steve Purcell provides some concept art for a Steam Mecha Max toy that was never made.
At one point I had talked to a company about making this toy. The top of the head would pop off revealing the little Captain Nemoesque Sam & Max pilots sporting goggles, top hats and ascots. Sadly it didn't happen but if I wish hard enough...Crazy.
Update: Now Steve's got the same picture up in Mecha form, complete with a cockpit view. Enjoy!