The Taxi trolley can hold two internal trolleys at the same time and can be towed behind a truck in a train of several Taxi trolleys. A unique 4-wheel steering system ensures that the Taxi trolleys run smoothly and track well in the train. This is an advantage, and in many cases a must, in narrow corridors and aisles. The internal trolleys have four swivel wheels, making them easy to manoeuvre and suitable for use as individual manual trolleys as well. The Taxi trolleys with internal trolleys can be uncoupled from the Taxi with the internal trolleys in place and manoeuvred manually, in and out of lifts for example.