From the Department of Why Didn't I Think of That*: London to Sydney? Sure. London to Sydney by bus? Sign me up (cash and 12 weeks free time permitting, admittedly). What next? Tierra del Feugo to Alaska along the non-existent NAFTA superhighway? Cairo to the Cape? Well, why not?
*Partly, you dolt, because you don't know how to drive. True.