Navigant Research所发布的这份无人驾驶技术排行榜（Autonomous Driving Leaderboard）是衡量各大汽车制造商自动驾驶技术水平的一个可视化指标，该榜单还揭露了哪些车厂拥有足够的资源和行业影响力，能以各种手段将它们的想法从设计图带入消费市场。
Why? In Tesla's case, Navigant argues that the company been struggling to reach former glories after its parting of ways with a key supplier. As the study says, "While Tesla has been aggressive in promoting Autopilot, since ending its relationship with Mobileye, the company has struggled to reach the same level of functionality with its in-house developed system."
But what about Apple's tied-for-last-place finish? Part of it may be due to rumors of a shift in focus for the company's secret automated-driving initiative, Project Titan. There's also the fact that, as a serial outsourcer to contract manufacturers, "[Apple] still lacks any automotive manufacturing infrastructure."
The study's former leader of the pack, Ford, has now been relegated to fourth place as companies such as Alphabet's Waymo and General Motors have doubled down on last year's efforts and made up the difference. In its study, Navigant is quick to point out that Ford's drop in position has nothing to do with its shortcomings and everything to do with more robust competition from the likes of Daimler-Bosch, BMW and Volkswagen-Intel.