The Brompton folding bicycle was designed to be all at sea, having been created for easy storage on yachts. If your yacht is big enough you could ride it around on deck, but failing that you're likely to see it in bicycle-friendly cities (excluding Hong Kong) such as London and Sydney.
When not in use, Bromptons can be spotted slung across shoulders as green-thinking, car-eschewing commuters slip them smugly onto brimful suburban trains. In introverted mode, which it will adopt in 15 seconds without need of tools, it shrinks to about the size of one of its 40-centimetre wheels.
But not content with being king of the road, the bike now comes with its own handmade black leather trunk, in which it crouches like a Mongolian contortionist. Made by Connolly of Mayfair, London (see www. urbanpath.com/london/leather-goods/connolly. htm; tel: 44 20 7439 2510), the trunk costs a third-world-debt-sized GBP7,000 ($100,000), but don't panic - for that price a bike is thrown in. Just don't leave it on an overhead luggage rack.
