Police are believed to be making some progress towards producing an image of the driver.

BBC: NEWS | UK | Two car bombs found in West End

Driver updater is also vital for video, audio, driver and image quality settings.

FORBES: Connect

There have been other attempts at a camera-based solution, but the new Cambridge company - InView Systems - says the solution it is developing with Jaguar Cars involves creating a virtual image in front of the driver, like a military "head up display".

BBC: pipe cleaner

The advantage is that the panoramic image appears to be a long way away so the driver does not have to re-focus on it.

BBC: pipe cleaner