Automakers have been gradually improving autonomous driving technology in vehicles, working closely with tech companies to enhance features to get them on the roads. Several cities have rolled out autonomous taxi and bus pilot schemes in recent years, demonstrating just how far the technology has come. However, there are still significant limits to how and where autonomous vehicles can drive. Now, as Nvidia has big plans to deploy more high-tech self-driving cars, some other automakers, such as Mercedes, are putting their projects on pause. When…