Place this clip at the start of the movement in your edit, just as the vehicle or character sets off. Follow it with a pop sfx for a small jump or turn, then let the scene continue without another effect underneath.
このサウンドについて
This is a one-second voice clip of Lulu saying 'vroom vroom' in a playful imitation of a little car engine revving and driving off. The quick, bouncy delivery feels cute, silly and cheerful, like a child playing with a toy car, which makes the moment feel light and instantly funny for listeners hearing it out of nowhere.