Time spent on public transport is useful, particularly time spent on trains. You've got wifi, a table and a power socket, so you can get real work done. You can have a proper meal and a glass of wine, you can watch a movie, read a book or have a nap. Most buses in my country now have wifi and power sockets.

A lot of rail commuters find that their commute is an unusually productive time. You've got all the resources you need to work but relatively few distractions, especially in the quiet carriage. It's a little slice of time that's entirely your own. It's like working in a cafe, except you're travelling at 125mph.

Here in the UK, the railways are too successful for their own good - passenger volume has doubled in 20 years, so the infrastructure is creaking under the sheer weight of passengers. We're building a new cross-country high-speed route, two major commuter routes across London, upgrading vast swathes of the network and it's still not nearly enough to keep up with demand.