My original idea for a Zoid for the urban environment was one that popped out of manholes, possibly a Sewerzoid. But I thought this was... well, I don't know, just did this instead! These guys are not dangerous unless they're in a very wide open area. If they hit a wall, they explode! They're not much like any other zoid, but they're fun and interesting. PS - they can smash minecart barriers!
Autozoids need Mine Cart Path tiles to drive on. Also, contrary to their scan text, in the release version of the game, they do not immediately explode upon hitting a wall (or likewise an item/monster), but lose HP instead.