Driving game???

I am making a semi truck driving game.In this game youll be able to drive a log truck,logging machines,and much more like cut down trees.I am looking at engine with ease of making roads how you want,and a good networking base.How does torque fit?I am right now in between leadwerks engine and torque.I know you all are gonna most likley say torque is best for me sence this is on there forum but i need a onist opinion.How complex and hard would it be for me to make a driving game and it be multiplayer?