A user scans for an available vehicle using the Uber Technologies Inc.'s app on an Apple Inc. iPhone 6 smartphone in this arranged photograph in London, U.K., on Thursday, May 14, 2015. Data obtained by Bloomberg from Transport for London, the transit authority, show black-taxi license applications are down 20 percent so far this year, with the blame being laid squarely at Uber Technologies Inc.'s door. Photographer: Simon Dawson/Bloomberg via Getty Images
