The high-capacity vehicle-to-vehicle (V2V) communication provides a promising solution to support ubiquitous media streaming and content sharing among vehicles.To extend the V2V links to multiple cells and manage the inter-cell interference,we proposed an UAV-assisted inter-cell V2V communication model,in which a shared UAV node is placed in the center of V2V users.By charging the V2V users underlay spectrum access fee,the cellular network earn profit at the cost of encountering co-channel interference from V2V links.A Stackelberg game is formulated to model the interactions between the V2V links and the cellular links,which are the game follower and the leader respectively.Their utility functions are maximized in terms of accessing price as well as transmit power of V2V users and UAV relays.Simulation evaluations verify that the power-price tradeoff between V2V network and cellular network has significant potentials to enhance their utility.