What no Fosters? The Aussie's know how to party....don't 'cha?
In the US in many jurisdictions there are "motorized" vehicles which aren't considered "motor vehicles" for the purpose of Tags, Titles and Taxes. Things like a powered skate board, or an electric wheel chair, or maybe even an "esky". However, I think most jurisdictions also expand the definition when it comes to drunk driving, so that most any vehicle, including a horse or a unicycle, can get you in a heap of trouble if you're drunk.