Nvidia is a large distributed organization so it's possible if not likely that the relative understanding of this particular UK team is not reflective of the total expertise at the company.

They definitely have more than "just a processor": http://www.nvidia.com/object/drive-automotive-technology.htm...

I have a friend who works in the self driving team at Nvidia in Santa Clara (apologies for the login wall): https://www.linkedin.com/pulse/full-stack-engineers-self-dri...

They've also got some demos up on YouTube: http://youtu.be/YuyT2SDcYrU