  We are on the verge of a new age of linked autonomous cars with unheard-of
user experiences, dramatically improved air quality and road safety, extremely
varied transportation settings, and a plethora of cutting-edge apps. A
substantially improved Vehicle-to-Everything (V2X) communication network that
can simultaneously support massive hyper-fast, ultra-reliable, and low-latency
information exchange is necessary to achieve this ambitious goal. These needs
of the upcoming V2X are expected to be satisfied by the Sixth Generation (6G)
communication system. In this article, we start by introducing the history of
V2X communications by giving details on the current, developing, and future
developments. We compare the applications of communication technologies such as
Wi-Fi, LTE, 5G, and 6G. we focus on the new technologies for 6G V2X which are
brain-vehicle interface, blocked-based V2X, and Machine Learning (ML). To
achieve this, we provide a summary of the most recent ML developments in 6G
vehicle networks. we discuss the security challenges of 6G V2X. We address the
strengths, open challenges, development, and improving areas of further study
in this field.
