110 developers rocked up to One Canada Square, Canary Wharf recently for the London-leg of the PayPal search to find the best hackers across ten of the world's coolest cities.
Hailo is an interesting business because drivers tell you that already 7,000 of the network of 23,000 cabs are using the service. But it's very much on their own terms. Want to pay cash for a cab in the middle of the day? A driver will pull up in two minutes. Want to pay by credit card in the evening the app often struggles to find a single taker.