Can you replicate millions of dollars of tech with a webcam and an arduino? Not really, but you can get pretty close! Dr Alex Turner took to the motorways of Britain to prove a point! A few extra bits from our conversation: https://www.youtube.com/watch?v=wEuaMEQs4Sw Alex's Code: https://apt503.github.io/ https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com/ Thank you to Jane Street for their support of this channel. Learn more: https://www.janestreet.com/