I was on my way back from Dallas on I-20 and I was on the phone with my son and coming head on towards me I saw an 18 wheeler jacknifing and hitting a suburban and then it started rolling over and running off the road!!!!!!!!!!! I immediatly hung up the phone and called 911 .......... At first I thought they were going to come accross the divider but they stopped first...............Several other people stopped and I was already running way late so I didnt stop but it was certainly crazy