the present invention offers systems and methods for effective multiple - hop routing , multicasting and media access control for vehicle group communications that employ directional wireless radio technology . multi - beam optic - wireless media and streamlined operations provide low - overhead communications among vehicles . systems and methods are provided to maintain a quasi - stationary group of neighboring vehicles , enable high - throughput on - demand switching among multiple vehicles , enable group coding in the vehicle group to achieve higher throughput , and enable dynamic adjustment of link to maintain desirable vehicle group . the proposed solution builds upon the conception of a mac - free wireless operation and quasi - stationary vehicular switched network to achieve ultra - low - overhead and high - throughput vehicle communications .