Keep up the good work!
Maybe you should sculp a model from clay, then make a mold so you can reproduce them and sell them! The hot wheels car factory I mentioned earlier uses colored "glue sticks" to inject the material in a silicone mold. The bodies are pretty tough and flexible, but they won't fit a Bit! If I can find the time, I'll probably try and make a custom Buick GN body for my Bits. I'll probably use regular clear glue sticks, and paint the bodies black.