See it in action here: http://youtu.be/fOuP_w0FZi0
This is a proposal to release a vehicle with omniwheels, just like you can see in the video above. The end product -will- look different than this picture (not very likely that Lego will release a tank as a model), so if you have any preferences to the looks and the colorscheme of the model, please let me know in the comments.
Below is a picture of other vehicles I've built. So which one would be best suited for the omniwheel treatment?