Shaking while driving

Saw a guy total his truck when that happened. The driveshaft came over and actually bent the frame of the truck. Tore all the wiring and air lines etc.. He wanted me to give him an estimate to repair. Like a 98 Century with probably 2.5 million on it (like a year ago). I told him to call his insurance company. I wasn't going to spend hours working up an estimate for a totaled truck.