Christopher urmson , a carnegie mellon university robotics scientist , was behind the wheel but not using it .

卡内基梅隆大学的机械学家克里斯多佛厄姆森坐在方向盘后面，但并没有在驾驶。

When he returned to automated " cruise " mode , the car gave a little " whir " meant to evoke going into warp drive on " star trek , " and dr. urmson was able to rest his hands by his sides or gesticulate when talking to a passenger in the back seat .

当他回到自动“巡航”模式，这辆车会发出轻微的“呜呜”声，让人想到《星际迷航》里进入空间跳跃的声音，此时厄姆森博士就可以在和后座的乘客交谈时将双手放在座位两边，或者比划手势了。