Finally some pictures to show!

Here you go, made this quickie sketch using Metasequoia, an excellent (and easy to use) 3D-imaging software made by M. Osamu Mizuno.







This is just to give a general idea of what the concept is. You can see the (potential) location of the motor and the drive wheel. Keep in mind that this is just a preliminary sketch... Still have no idea what the final product will look like.