Can someone help me with this car accident situation? My friend drove the car on the highway and hit the backside of an Holden SUV at about 100km/h, the driver not injured at that time and the car can drive as well, my friend was the first time been through this, so he didn't ask the drive for the phone number and the plate number, only police told him to wait for further info. After one month he received a bill letter said he need to pay the driver around $16000, which including the whole car repair. He is an international student, he cannot pay that much so he called car insurance company who send the letter, they said they understand and will discuss with the insurer, but after one month, the amount change to $23000. My friend really don't know how to deal with it.