【正文】
teering wheel, ready for a sudden turn or a large boulder that may appear any second. however, when we drive on a highway, everything bees different. the road is smooth, straight, and visible. since there is no unseen obstacle, we may lower our guard, relax a bit, and loosen our grip on the steering wheel. one may even think, if we only have to drive on a smooth straight road like this highway, why would we need a steering wheel?最好的資料給最好的你