Ever since I saw my first one zoom past as a boy I’ve loved TGVs. In January I travelled from one side of France to the other and back by high-speed train to get to a conference, and used the chance to try to capture some of what I love about fast trains in France. It’s a mash up of travel diary, interviews and engineering history, all stitched together with familiar SNCF noises. Close your eyes and bon voyage...