主播大秀

Are ideas like parcel delivery drones and transport pods that move people and freight through tubes at the speed of sound too outlandish to be accepted by public, politicians, and regulators? We ask Paul Misener from Amazon, and Alan James of Hyperloop One. Plus we get the view of President Obama's technology adviser Megan Smith. Presented by Rory Cellan-Jones, with Jane Wakefield from the 主播大秀 Online tech desk, and special guest Dr Ruth McKernan from Innovate UK.

(Image: Hyperloop One test site in Nevada, Credit: David Becker/ Getty Images).