New Audi A8 2018 review - the most high-tech car ever

This is the all-new Audi A8. The fourth generation of Audi’s luxury limousine could be one of the most technologically advanced cars ever produced - so I put its gadgets to the test in this first drive review. Find out what it’s like to drive, what it’s like to be driven in, and how well the rear quarters double as a dining room...