A method implemented by a platoon management entity (120, 130, 150) managing a platoon of vehicles (170A, 170B), the platoon comprising members communicating using communication systems configured to use a first vehicle-to-everything radio access technology, V2X RAT, said members being the vehicles (170A, 170B) of the platoon, the method comprising: determining (600, 605; 700) that an interworking function for providing simultaneous access to a plurality of V2X RATs (160A, 160B) including the first V2X RAT is available from an interworking vehicle comprising an interworking communication system capable of supporting the interworking function; including (515, 610, 615) the interworking vehicle in the platoon; determining availability of a further vehicle (170A, 170B) comprising a further communication system to join the platoon, the further communication system being configured to communicate using a second V2X RAT of the plurality of V2X RATs (160A, 160B); transmitting, via the interworking communication system utilizing both the first V2X RAT and the second V2X RAT of the plurality of V2X RATs, a request (540; 635, 640) to the further vehicle (170A, 170B) to join the platoon; receiving, via the interworking communication system, an acknowledgement (545, 550, 555; 645, 650) from the further vehicle; including the further vehicle in the platoon; detecting a cessation of the interworking function, wherein detecting the cessation of the interworking function comprises receiving, from the interworking vehicle, a notification including a projected time where the interworking vehicle ceases providing the interworking function; transmitting, via the interworking communication system, a message to the further vehicle removing the further vehicle from the platoon; and removing the interworking vehicle from the platoon. determining (600, 605; 700) that an interworking function for providing simultaneous access to a plurality of V2X RATs (160A, 160B) including the first V2X RAT is available from an interworking vehicle comprising an interworking communication system capable of supporting the interworking function; including (515, 610, 615) the interworking vehicle in the platoon; determining availability of a further vehicle (170A, 170B) comprising a further communication system to join the platoon, the further communication system being configured to communicate using a second V2X RAT of the plurality of V2X RATs (160A, 160B); transmitting, via the interworking communication system utilizing both the first V2X RAT and the second V2X RAT of the plurality of V2X RATs, a request (540; 635, 640) to the further vehicle (170A, 170B) to join the platoon; receiving, via the interworking communication system, an acknowledgement (545, 550, 555; 645, 650) from the further vehicle; including the further vehicle in the platoon; detecting a cessation of the interworking function, wherein detecting the cessation of the interworking function comprises receiving, from the interworking vehicle, a notification including a projected time where the interworking vehicle ceases providing the interworking function; transmitting, via the interworking communication system, a message to the further vehicle removing the further vehicle from the platoon; and removing the interworking vehicle from the platoon.