Highway Racing Online. Put your driving skills to the test in Highway Racing, a super fun and intense racing game. Race on a busy highway and dodge and weave between traffics. Overtake other cars. Custom your car’s color, wheels, and engines. Earn money from races to purchase cool upgrades or if you have enough a brand new car. This game is one of the 3D games on Round Games. This game is one of the racing games on Round Games. Enjoy and have fun in playing this free online game.