需要在保持一句拆组成两句的前提下，将这句或这对句子翻译为英文。
于秋驾车上高速公路，也不知道是跟什么飙车了。这一时的胜利使得他自信心极度膨胀，开始在中国境内的所有公共道路上横行霸道。
user
Jin drove his car onto the expressway, not even knowing what he was racing against.  
This momentary victory made him excessively overconfident, causing him to recklessly dominate all public roads within China.
assistant