To our Answermug friends across the pond. Do you live near the Crossrails Canary Wharf Station under construction now?

It's a new line being built to connect with various existing below-ground lines and is being built UNDER LONDON! They plan to have a rooftop garden on top when the construction is done.  It was featured on NOVA.  It's a huge project and will save a lot of time getting from place to place. I did not know that London was the first place to feature below-ground transportation. I thought it was the subway in New York but no. Any idea how much it will cost when completed? Will you be able to take advantage of it?