At £140 a mile, how does Elon Musk’s moon trip compare with other journeys?

From car to rail, it's hard to find a terrestrial journey that matches SpaceX's astronomical cost

It is a stratospheric sum but it does, at least, include the return journey. Elon Musk, the billionaire American transport visionary, has suggested that the first, so far unnamed, passengers on his SpaceX flight round the moon will pay about $70m (56m).

Musk says the journey, tentatively scheduled for 2018 on an untested Falcon Heavy rocket, will cover up to 400,000 miles, although the Apollo 13 crew, on their trip to the moon in 1970, were a record 248,655 miles from Earth, so this figure seems modest if anything. Either way, 400,000 miles (about 16 times the circumference of Earth) for 56m is equal to about 140 a mile, which is easier to fathom. But how does it compare with terrestrial journeys?