It's been almost a year since the UK's Transport Research Laboratory (TRL) opened sign-ups for a driverless pod trial in Greenwich. The original plan was to start before Christmas, but given today's date that obviously didn't happen. Over the next three weeks, roughly 100 people will clamber aboard "Harry," a self-driving shuttle named after clockmaker John Harrison. It will take them around a two-mile course in North Greenwich, near The O2, to demonstrate how the technology could be used for "last mile" trips in urban areas. The shuttle is a repurposed Ultra Pod, which is already in operation at London's Heathrow Airport.