Ok, as ex wagon driver will confess to still being fascinated to lorries, but interesting story on the Beeb about the future of freight travel, and a concept called "platooning". This allows a convoy of lorries to travel close together, all being controlled by the lead vehicle using wireless technology.
This is an exert from a Scania promotional video
Amazing stuff. It's been know for years you can save fuel by sitting in a vehicles slipstream, and this is why you see wagons so close to each other going up the motorway, but it is a dangerous practice. New adaptive cruise controls and auto braking systems are slowly becoming available, and controlling the vehicles wirelessly seems a natural evolution.
So how will you feel seeing a convoy of automated wagons trundle past? Lets hope they don't run on Windows 
