A Chinese farmer has invented a combined suitcase/scooter. It can carry two passengers, although I wonder how you'd decide how much clothing etc each person would have especially as it weighs 15lb when empty. Better to have one each! The scooter case can cover distances of up to 37 miles and maintain a speed of 12mph. See here for further information on City Cab as its being dubbed.
Can you see yourself using one of these to your local airport? It would be handy at the other end if there's long queques for the taxis.