Rory Cellan-Jones examines how misinformation spreads across online platforms. Plus, why Tesla’s Elon Musk is promising a $25,000 fully autonomous electric car. And former Danish Prime Minister Helle Thorning-Schmidt, co-chair of Facebook’s new oversight board, on how the body will handle controversies relating to the US election. With BBC tech reporter Jane Wakefield. Produced by Jat Gill. (Image: Anti coronavirus-lockdown protest in Trafalgar Square, London, August 2020. Credit: Richard Baker / In Pictures via Getty Images).