"By ‘picking up’ passengers on this people-powered train along the way, the artist-driver will establish imaginary overground routes through public spaces with an innovation that responds to 150 years of underground travel in the capital." says the blurb for the event.
No booking is required, so if the weather's dry (cardboard trains don't run well in downpours) it should be an interesting experience.
Full details are at Fitzrovia Noir's site or on the Facebook page for the event.
