He does not contain acid, you cannot ride in him(Even if you could he would still be too small) and he does not eat, at all. He instead creates energy via solar power and kinetic energy. This is stored within his generator inside of his main hull.
Pooka for the artwork, and me for the vector and original character. Technically Molten and Vinnie for their models that I used and edited. (Vinnie got me where I am today so I owe him everything)