Uber, the taxi company built for the Digital Age, has seen tremendous growth in the past few years, and despite a fair amount of opposition - no less from disgruntled preexisting taxi firms - continues to expand its reach and range of services. But while everything seems to be plodding along relatively smoothly just now, a new report suggests that the dark, shadowy and imposing figure of Google may be lurking in the background, and despite the Big G having pumped major investment into Uber over the past 18 months or so, could now be looking to build a directly-competing service.