MobilitY and CollAboRative Work in European Vehicle Emergency NeTworks (MYCAREVENT) is an European Project of the 6th Framework Program [1], and aims to optimize the European market for automotive after sales services and repair. MYCAREVENT develops innovative applications and services, which can always be accessed seamlessly and securely using mobile communication. Maintenance situations like car breakdowns or minor failures happen everywhere. Wherever such an unpleasant situation appears, the driver needs help and advice - most likely provided by a roadside patrol. To support roadside technicians and drivers with MYCAREVENT products and services, a mobile communication following an "always best connected" approach facilitates the communication between the mobile users within a collaborative work environment. This paper presents the vehicle communication gateway (VCG) and its protocol architecture developed in MYCAREVENT.