The CAR 2 CAR Communication Consortium uses cooperative V2X short-range communications that performs everywhere at any time without any dead spots. The cooperative V2X local data exchange between cooperative participants is called Car2X communication. The Car2X radio builds on the European standard ETSI ITS-G5 which is based on the US market IEEE 802.11p WLAN standard especially designed for automotive applications. Seamless evolution is granted by the successor standard IEEE 802.11bd being developed. For getting deeper insight in the technology and features of the standards you should analyse the published scientific papers.

Google Scholar offers you an opportunity for easily finding scientific papers related to both IEEE ad-hoc WLAN radio standards: 

IEEE 802.11p

IEEE 802.11bd