一天,刮着南风,突然下雨了。甲、乙两辆(liàng)汽车同时从西向东开。这时,一群孩子发现两辆车侧(cè)面玻璃(li)上的雨迹不一样,甲车玻璃上的雨迹较直,乙车的却比较斜(xié)。于是孩子们有的说甲车快,有的说乙车快,请你来判断在雨：中哪辆车开得较快? One day, blowing southerly, it suddenly rained. A, B two cars at the same time from west to east. At this moment, a group of children noticed that the rain traces on the li of the two car sides were different. The rain gauge on the armor glass was straight and the second car was rather oblique. So some of the children said that a fast car, and some say B car fast, please judge your rain: Which car opened faster?