I have just found this out.
You know when youre just driving around and you hear "Want a good time honey?" if you pressed y, theyd go in the car. Most people would be like "Ok...? Wtf now?". Well, if you go behind a building or somewhere private (still in your car), you'll heaer "This is a good spot". And for some reason... the car will start bouncing like a low-rider!