the present invention provides for a flexible connection for connecting train cabins in a train . the connection comprises a first tubular train cabin having an end portion having a first diameter and a second tubular train cabin having a front portion having a second diameter . the second diameter is greater than the first diameter such that the end portion of the first train cabin fits within the front portion of the second train cabin . at least one flexible buffer ring , extending around an outer circumference of the end portion of the first train cabin is positioned as a cushion between the outer circumference of the end portion of the first train cabin and the inner circumference of the front portion of the second train cabin such that when the train enters a curve and the first train cabin turns relative to the second train cabin about a pivot axis . the flexible buffer ring provides a stable cushioned connection between the train cabins .