One major step forward was taken last week on a motorway outside Barcelona, Spain - the first-ever test drive of a road train consisting of both trucks and cars among other road users. The test convoy covered 200 kilometres in one day. Three Volvo cars and another Volvo truck followed the lead Volvo truck, the distance between each vehicle being just 6 metres at 85 kilometres per hour. In the project called SARTRE (Safe Road Trains for the Environment), existing vehicle safety systems - such as cameras and radar -are used by the following vehicles to monitor the lead truck as well as other vehicles in their immediate vicinity. By adding wireless communication, the vehicles in the platoon "mimic" the lead truck - accelerating, braking and turning in exactly the same way as the leader. Available material includes and edited package.