No one needs access to driverless cars more than America's poor Ashley Nunes

Silicon Valley is pouring billions into robot cars. Soon – although the time scale keeps shifting – tech manufacturers say driverless cars will replace their traditional counterparts, car parks will become parks again and road fatalities will plummet. People have argued over ethical concerns surrounding the technology, the ensuing job losses and the public's antipathy to this robot revolution. But the biggest obstacle may well be money. We have been taking a deep look at the economics of driverless technology.