I was inspired by the challenge Malaveldt set himself: How small can you make a tank before it looks ridiculous? I'm not sure if I've fulfilled the non-ridiculous part of the brief, but it makes me smile. You can see Malaveldt's rather more impressive design here. Malaveldt's would win in a fight, I guess, but mine's smaller. Design-wise, I was inspired by those tiny little diggers that one sometimes sees mending the road, and the front-opening door comes from the BMW Isetta. Update: Have now uploaded a picture of the microtanks in action here.