From Jon Sparks, Garstang, Lancashire, UK
Zunum Aero hopes its planned hybrid aircraft – partially powered by electricity – will manage 1100 kilometres on a single charge (5 January, p 32). You provide maps showing some of the journeys that could be accomplished. Most can be done by train. A French TGV train has achieved 574 kilometres per hour and average station-to-station speeds around 280 km/h are scheduled in both France and China. TGV services run between Paris and Barcelona in Spain in under 6.5 hours.
