Firstly, there isn't all that much of anything in Birmingham that makes this worthwhile. At best there might be some new business development in 10-20 years, but it's not at all obvious that Birmingham is somehow going to become London's second business centre because of HS2.

Most of the claims in this piece are simply nonsense. The Euston to Crewe train that's mentioned doesn't go anywhere near Birmingham, so it's not obvious that HS2 would make much of a difference to traffic on it.

And even if it did, it's merely one of a large number of routes heading out of London in all directions that are ridiculously overcrowded. At best, HS2 might reduce a small proportion of that overcrowding, but it's certainly not going to eliminate it.

The idea that HS2 can make Birmingham airport competitive with Heathrow for Londoners is clearly wrong. Birmingham doesn't have the flights, the destinations, or the capacity. London also has Heathrow Express for quick train journeys from Paddington to Heathrow - concourse to concourse. Even with a shorter journey time, HS2 can't match that.

And HS2 doesn't start to make sense until Phase 2 is built, linking Sheffield, Manchester and Leeds. You might see some benefits then - but the realistic total cost is likely to be the far side of £100bn. Which is madness.

It's actually five years of the total NASA budget, which is supposed to pay for development of the next Lunar program, as well as everything else NASA does.

It would be much better to spend a much smaller sum making the UK's broadband the best in Europe, set up a world-leading incubator fund for digital startups outside of London, with next-generation training and education, and try to persuade existing corporates to consider home working options. The return on that would be huge.

This is just a giant train set for rail nostalgists.