The designers came up with various types of vehicles to surf the former train, tram and metro tracks. One of them is the Métronome, a transparent three-person capsule that was launched in Paris in 2012. This wagon is the most serious chariot in their fleet, and seems to meet the needs of a family on a urban exploring trip. Other examples, like The Tapis Volant — a one person vehicle that was made for Istanbul’s tram network — and the Radeau de Sauvetage — which seems to be a cross-over between a sailboat and a pump trolley — are more conceptual and less useful. Back in 2007, the design studio also tested some vehicles on the actual High Line, which in those days was still an urban left-over only frequented by birds, bees and graffiti artists.